diff --git a/dom/base/BlobSet.h b/dom/base/BlobSet.h
index 198e80850b43..dc021362e267 100644
--- a/dom/base/BlobSet.h
+++ b/dom/base/BlobSet.h
@@ -20,7 +20,7 @@ public:
 
   ~BlobSet()
   {
-    moz_free(mData);
+    free(mData);
   }
 
   nsresult AppendVoidPtr(const void* aData, uint32_t aLength);
@@ -52,7 +52,7 @@ protected:
     if (!bufferLen.isValid())
       return false;
 
-    void* data = moz_realloc(mData, bufferLen.value());
+    void* data = realloc(mData, bufferLen.value());
     if (!data)
       return false;
 
diff --git a/dom/base/File.h b/dom/base/File.h
index ad704a007c20..b3fae54be4ed 100644
--- a/dom/base/File.h
+++ b/dom/base/File.h
@@ -84,7 +84,7 @@ public:
          uint64_t aLength);
 
   // The returned File takes ownership of aMemoryBuffer. aMemoryBuffer will be
-  // freed by moz_free so it must be allocated by moz_malloc or something
+  // freed by free so it must be allocated by malloc or something
   // compatible with it.
   static already_AddRefed<File>
   CreateMemoryFile(nsISupports* aParent, void* aMemoryBuffer, uint64_t aLength,
@@ -92,7 +92,7 @@ public:
                    uint64_t aLastModifiedDate);
 
   // The returned File takes ownership of aMemoryBuffer. aMemoryBuffer will be
-  // freed by moz_free so it must be allocated by moz_malloc or something
+  // freed by free so it must be allocated by malloc or something
   // compatible with it.
   static already_AddRefed<File>
   CreateMemoryFile(nsISupports* aParent, void* aMemoryBuffer, uint64_t aLength,
@@ -552,7 +552,7 @@ public:
         sDataOwners = nullptr;
       }
 
-      moz_free(mData);
+      free(mData);
     }
 
   public:
diff --git a/dom/base/nsAttrAndChildArray.cpp b/dom/base/nsAttrAndChildArray.cpp
index 6ebc62e751f3..a3ed01bb97a7 100644
--- a/dom/base/nsAttrAndChildArray.cpp
+++ b/dom/base/nsAttrAndChildArray.cpp
@@ -102,7 +102,7 @@ nsAttrAndChildArray::~nsAttrAndChildArray()
 
   Clear();
 
-  moz_free(mImpl);
+  free(mImpl);
 }
 
 nsIContent*
@@ -635,11 +635,11 @@ nsAttrAndChildArray::Compact()
   // Then resize or free buffer
   uint32_t newSize = attrCount * ATTRSIZE + childCount;
   if (!newSize && !mImpl->mMappedAttrs) {
-    moz_free(mImpl);
+    free(mImpl);
     mImpl = nullptr;
   }
   else if (newSize < mImpl->mBufferSize) {
-    mImpl = static_cast<Impl*>(moz_realloc(mImpl, (newSize + NS_IMPL_EXTRA_SIZE) * sizeof(nsIContent*)));
+    mImpl = static_cast<Impl*>(realloc(mImpl, (newSize + NS_IMPL_EXTRA_SIZE) * sizeof(nsIContent*)));
     NS_ASSERTION(mImpl, "failed to reallocate to smaller buffer");
 
     mImpl->mBufferSize = newSize;
@@ -776,7 +776,7 @@ nsAttrAndChildArray::GrowBy(uint32_t aGrowSize)
   }
 
   bool needToInitialize = !mImpl;
-  Impl* newImpl = static_cast<Impl*>(moz_realloc(mImpl, size * sizeof(void*)));
+  Impl* newImpl = static_cast<Impl*>(realloc(mImpl, size * sizeof(void*)));
   NS_ENSURE_TRUE(newImpl, false);
 
   mImpl = newImpl;
diff --git a/dom/base/nsContentUtils.cpp b/dom/base/nsContentUtils.cpp
index 6604b747ea64..0d8edff1eed6 100644
--- a/dom/base/nsContentUtils.cpp
+++ b/dom/base/nsContentUtils.cpp
@@ -6052,7 +6052,7 @@ nsContentUtils::CreateBlobBuffer(JSContext* aCx,
                                  JS::MutableHandle<JS::Value> aBlob)
 {
   uint32_t blobLen = aData.Length();
-  void* blobData = moz_malloc(blobLen);
+  void* blobData = malloc(blobLen);
   nsRefPtr<File> blob;
   if (blobData) {
     memcpy(blobData, aData.BeginReading(), blobLen);
diff --git a/dom/base/nsDOMFileReader.cpp b/dom/base/nsDOMFileReader.cpp
index 6dda3a1edc1b..062856273da4 100644
--- a/dom/base/nsDOMFileReader.cpp
+++ b/dom/base/nsDOMFileReader.cpp
@@ -363,7 +363,7 @@ nsDOMFileReader::DoReadData(nsIAsyncInputStream* aStream, uint64_t aCount)
       return NS_ERROR_OUT_OF_MEMORY;
     }
     if (mDataFormat != FILE_AS_ARRAYBUFFER) {
-      mFileData = (char *) moz_realloc(mFileData, mDataLen + aCount);
+      mFileData = (char *) realloc(mFileData, mDataLen + aCount);
       NS_ENSURE_TRUE(mFileData, NS_ERROR_OUT_OF_MEMORY);
     }
 
diff --git a/dom/base/nsDOMFileReader.h b/dom/base/nsDOMFileReader.h
index 92fb59e50388..a7cd81e9093f 100644
--- a/dom/base/nsDOMFileReader.h
+++ b/dom/base/nsDOMFileReader.h
@@ -131,7 +131,7 @@ protected:
   nsresult GetAsDataURL(nsIDOMBlob *aFile, const char *aFileData, uint32_t aDataLen, nsAString &aResult);
 
   void FreeFileData() {
-    moz_free(mFileData);
+    free(mFileData);
     mFileData = nullptr;
     mDataLen = 0;
   }
diff --git a/dom/base/nsScriptLoader.cpp b/dom/base/nsScriptLoader.cpp
index 6b6e55997d61..bc442e3623e6 100644
--- a/dom/base/nsScriptLoader.cpp
+++ b/dom/base/nsScriptLoader.cpp
@@ -1461,7 +1461,7 @@ nsScriptLoader::OnStreamComplete(nsIStreamLoader* aLoader,
     }
     rv = NS_OK;
   } else {
-    moz_free(const_cast<uint8_t *>(aString));
+    free(const_cast<uint8_t *>(aString));
     rv = NS_SUCCESS_ADOPTED_DATA;
   }
 
diff --git a/dom/base/nsTextFragment.cpp b/dom/base/nsTextFragment.cpp
index f39d680de342..3367e6010f6e 100644
--- a/dom/base/nsTextFragment.cpp
+++ b/dom/base/nsTextFragment.cpp
@@ -84,7 +84,7 @@ void
 nsTextFragment::ReleaseText()
 {
   if (mState.mLength && m1b && mState.mInHeap) {
-    moz_free(m2b); // m1b == m2b as far as moz_free is concerned
+    free(m2b); // m1b == m2b as far as free is concerned
   }
 
   m1b = nullptr;
@@ -107,7 +107,7 @@ nsTextFragment::operator=(const nsTextFragment& aOther)
       size_t m2bSize = aOther.mState.mLength *
         (aOther.mState.mIs2b ? sizeof(char16_t) : sizeof(char));
 
-      m2b = static_cast<char16_t*>(moz_malloc(m2bSize));
+      m2b = static_cast<char16_t*>(malloc(m2bSize));
       if (m2b) {
         memcpy(m2b, aOther.m2b, m2bSize);
       } else {
@@ -255,7 +255,7 @@ nsTextFragment::SetTo(const char16_t* aBuffer, int32_t aLength, bool aUpdateBidi
   if (first16bit != -1) { // aBuffer contains no non-8bit character
     // Use ucs2 storage because we have to
     size_t m2bSize = aLength * sizeof(char16_t);
-    m2b = (char16_t *)moz_malloc(m2bSize);
+    m2b = (char16_t *)malloc(m2bSize);
     if (!m2b) {
       return false;
     }
@@ -268,7 +268,7 @@ nsTextFragment::SetTo(const char16_t* aBuffer, int32_t aLength, bool aUpdateBidi
 
   } else {
     // Use 1 byte storage because we can
-    char* buff = (char *)moz_malloc(aLength * sizeof(char));
+    char* buff = (char *)malloc(aLength * sizeof(char));
     if (!buff) {
       return false;
     }
@@ -326,7 +326,7 @@ nsTextFragment::Append(const char16_t* aBuffer, uint32_t aLength, bool aUpdateBi
 
   if (mState.mIs2b) {
     // Already a 2-byte string so the result will be too
-    char16_t* buff = (char16_t*)moz_realloc(m2b, (mState.mLength + aLength) * sizeof(char16_t));
+    char16_t* buff = (char16_t*)realloc(m2b, (mState.mLength + aLength) * sizeof(char16_t));
     if (!buff) {
       return false;
     }
@@ -348,8 +348,8 @@ nsTextFragment::Append(const char16_t* aBuffer, uint32_t aLength, bool aUpdateBi
   if (first16bit != -1) { // aBuffer contains no non-8bit character
     // The old data was 1-byte, but the new is not so we have to expand it
     // all to 2-byte
-    char16_t* buff = (char16_t*)moz_malloc((mState.mLength + aLength) *
-                                                  sizeof(char16_t));
+    char16_t* buff =
+      (char16_t*)malloc((mState.mLength + aLength) * sizeof(char16_t));
     if (!buff) {
       return false;
     }
@@ -363,7 +363,7 @@ nsTextFragment::Append(const char16_t* aBuffer, uint32_t aLength, bool aUpdateBi
     mState.mIs2b = true;
 
     if (mState.mInHeap) {
-      moz_free(m2b);
+      free(m2b);
     }
     m2b = buff;
 
@@ -379,14 +379,14 @@ nsTextFragment::Append(const char16_t* aBuffer, uint32_t aLength, bool aUpdateBi
   // The new and the old data is all 1-byte
   char* buff;
   if (mState.mInHeap) {
-    buff = (char*)moz_realloc(const_cast<char*>(m1b),
-                                    (mState.mLength + aLength) * sizeof(char));
+    buff = (char*)realloc(const_cast<char*>(m1b),
+                          (mState.mLength + aLength) * sizeof(char));
     if (!buff) {
       return false;
     }
   }
   else {
-    buff = (char*)moz_malloc((mState.mLength + aLength) * sizeof(char));
+    buff = (char*)malloc((mState.mLength + aLength) * sizeof(char));
     if (!buff) {
       return false;
     }
diff --git a/dom/canvas/WebGLContextBuffers.cpp b/dom/canvas/WebGLContextBuffers.cpp
index 4a2d33e81b87..52a8e51aca65 100644
--- a/dom/canvas/WebGLContextBuffers.cpp
+++ b/dom/canvas/WebGLContextBuffers.cpp
@@ -174,7 +174,7 @@ WebGLContext::BufferData(GLenum target, WebGLsizeiptr size, GLenum usage)
     if (!boundBuffer)
         return ErrorInvalidOperation("bufferData: no buffer bound!");
 
-    UniquePtr<uint8_t> zeroBuffer((uint8_t*)moz_calloc(size, 1));
+    UniquePtr<uint8_t> zeroBuffer((uint8_t*)calloc(size, 1));
     if (!zeroBuffer)
         return ErrorOutOfMemory("bufferData: out of memory");
 
diff --git a/dom/fetch/Fetch.cpp b/dom/fetch/Fetch.cpp
index 4a11c32e1b16..bad7918727de 100644
--- a/dom/fetch/Fetch.cpp
+++ b/dom/fetch/Fetch.cpp
@@ -674,7 +674,7 @@ public:
 
   ~AutoFreeBuffer()
   {
-    moz_free(mBuffer);
+    free(mBuffer);
   }
 
   void
diff --git a/dom/indexedDB/ActorsParent.cpp b/dom/indexedDB/ActorsParent.cpp
index ea2fb3a1fcfa..597971959a77 100644
--- a/dom/indexedDB/ActorsParent.cpp
+++ b/dom/indexedDB/ActorsParent.cpp
@@ -14785,14 +14785,14 @@ ObjectStoreAddOrPutRequestOp::DoDatabaseWork(TransactionBase* aTransaction)
     reinterpret_cast<const char*>(mParams.cloneInfo().data().Elements());
   size_t uncompressedLength = mParams.cloneInfo().data().Length();
 
-  // We don't have a smart pointer class that calls moz_free, so we need to
+  // We don't have a smart pointer class that calls free, so we need to
   // manage | compressed | manually.
   {
     size_t compressedLength = snappy::MaxCompressedLength(uncompressedLength);
 
-    // moz_malloc is equivalent to NS_Alloc, which we use because mozStorage
+    // malloc is equivalent to NS_Alloc, which we use because mozStorage
     // expects to be able to free the adopted pointer with NS_Free.
-    char* compressed = static_cast<char*>(moz_malloc(compressedLength));
+    char* compressed = static_cast<char*>(malloc(compressedLength));
     if (NS_WARN_IF(!compressed)) {
       return NS_ERROR_OUT_OF_MEMORY;
     }
@@ -14808,7 +14808,7 @@ ObjectStoreAddOrPutRequestOp::DoDatabaseWork(TransactionBase* aTransaction)
     rv = stmt->BindAdoptedBlobByName(NS_LITERAL_CSTRING("data"), dataBuffer,
                                      dataBufferLength);
     if (NS_WARN_IF(NS_FAILED(rv))) {
-      moz_free(compressed);
+      free(compressed);
       return rv;
     }
   }
diff --git a/dom/ipc/Blob.cpp b/dom/ipc/Blob.cpp
index 7dc612750aed..0549fcff1df0 100644
--- a/dom/ipc/Blob.cpp
+++ b/dom/ipc/Blob.cpp
@@ -836,7 +836,7 @@ CreateBlobImpl(const nsTArray<uint8_t>& aMemoryData,
       return nullptr;
     }
 
-    void* buffer = moz_malloc(length * elementSizeMultiplier);
+    void* buffer = malloc(length * elementSizeMultiplier);
     if (NS_WARN_IF(!buffer)) {
       return nullptr;
     }
diff --git a/dom/media/EncodedBufferCache.cpp b/dom/media/EncodedBufferCache.cpp
index ddb927c8f53b..283e5ef2bfa5 100644
--- a/dom/media/EncodedBufferCache.cpp
+++ b/dom/media/EncodedBufferCache.cpp
@@ -54,7 +54,7 @@ EncodedBufferCache::ExtractBlob(nsISupports* aParent,
     mDataSize = 0;
     mFD = nullptr;
   } else {
-    void* blobData = moz_malloc(mDataSize);
+    void* blobData = malloc(mDataSize);
     NS_ASSERTION(blobData, "out of memory!!");
 
     if (blobData) {
diff --git a/dom/media/webaudio/AnalyserNode.cpp b/dom/media/webaudio/AnalyserNode.cpp
index d6adbcfcf809..69a94afae8e1 100644
--- a/dom/media/webaudio/AnalyserNode.cpp
+++ b/dom/media/webaudio/AnalyserNode.cpp
@@ -255,7 +255,7 @@ AnalyserNode::FFTAnalysis()
   if (mWriteIndex == 0) {
     inputBuffer = mBuffer.Elements();
   } else {
-    inputBuffer = static_cast<float*>(moz_malloc(FftSize() * sizeof(float)));
+    inputBuffer = static_cast<float*>(malloc(FftSize() * sizeof(float)));
     if (!inputBuffer) {
       return false;
     }
@@ -280,7 +280,7 @@ AnalyserNode::FFTAnalysis()
   }
 
   if (allocated) {
-    moz_free(inputBuffer);
+    free(inputBuffer);
   }
   return true;
 }
diff --git a/dom/media/webrtc/AudioOutputObserver.h b/dom/media/webrtc/AudioOutputObserver.h
index 13574c4efc7b..4034a5a2729a 100644
--- a/dom/media/webrtc/AudioOutputObserver.h
+++ b/dom/media/webrtc/AudioOutputObserver.h
@@ -52,7 +52,7 @@ private:
   uint32_t mChunkSize;
 
   // chunking to 10ms support
-  FarEndAudioChunk *mSaved; // can't be nsAutoPtr since we need to use moz_free()
+  FarEndAudioChunk *mSaved; // can't be nsAutoPtr since we need to use free(), not delete
   uint32_t mSamplesSaved;
 };
 
diff --git a/dom/media/webrtc/MediaEngineGonkVideoSource.cpp b/dom/media/webrtc/MediaEngineGonkVideoSource.cpp
index 54c60ea407b1..57aa57e8a83f 100644
--- a/dom/media/webrtc/MediaEngineGonkVideoSource.cpp
+++ b/dom/media/webrtc/MediaEngineGonkVideoSource.cpp
@@ -603,7 +603,7 @@ MediaEngineGonkVideoSource::OnTakePictureComplete(uint8_t* aData, uint32_t aLeng
       : mPhotoDataLength(aLength)
     {
       mCallbacks.SwapElements(aCallbacks);
-      mPhotoData = (uint8_t*) moz_malloc(aLength);
+      mPhotoData = (uint8_t*) malloc(aLength);
       memcpy(mPhotoData, aData, mPhotoDataLength);
       mMimeType = aMimeType;
     }
diff --git a/dom/media/webrtc/MediaEngineWebRTCAudio.cpp b/dom/media/webrtc/MediaEngineWebRTCAudio.cpp
index 8342f355374e..4ef7738e72aa 100644
--- a/dom/media/webrtc/MediaEngineWebRTCAudio.cpp
+++ b/dom/media/webrtc/MediaEngineWebRTCAudio.cpp
@@ -67,7 +67,7 @@ AudioOutputObserver::AudioOutputObserver()
 AudioOutputObserver::~AudioOutputObserver()
 {
   Clear();
-  moz_free(mSaved);
+  free(mSaved);
   mSaved = nullptr;
 }
 
@@ -75,7 +75,7 @@ void
 AudioOutputObserver::Clear()
 {
   while (mPlayoutFifo->size() > 0) {
-    moz_free(mPlayoutFifo->Pop());
+    free(mPlayoutFifo->Pop());
   }
   // we'd like to touch mSaved here, but we can't if we might still be getting callbacks
 }
@@ -544,7 +544,7 @@ MediaEngineWebRTCAudioSource::Process(int channel,
   if (!mStarted) {
     mStarted  = true;
     while (gFarendObserver->Size() > 1) {
-      moz_free(gFarendObserver->Pop()); // only call if size() > 0
+      free(gFarendObserver->Pop()); // only call if size() > 0
     }
   }
 
@@ -557,7 +557,7 @@ MediaEngineWebRTCAudioSource::Process(int channel,
                                                 gFarendObserver->PlayoutChannels(),
                                                 mPlayoutDelay,
                                                 length);
-      moz_free(buffer);
+      free(buffer);
       if (res == -1) {
         return;
       }
diff --git a/dom/plugins/ipc/PluginInterposeOSX.mm b/dom/plugins/ipc/PluginInterposeOSX.mm
index 39b99232d80d..7271181e35bb 100644
--- a/dom/plugins/ipc/PluginInterposeOSX.mm
+++ b/dom/plugins/ipc/PluginInterposeOSX.mm
@@ -265,13 +265,13 @@ NSCursorInfo::NSCursorInfo(const Cursor* aCursor)
     }
   }
 
-  moz_free(bitmap);
+  free(bitmap);
 }
 
 NSCursorInfo::~NSCursorInfo()
 {
   if (mCustomImageData) {
-    moz_free(mCustomImageData);
+    free(mCustomImageData);
   }
 }
 
@@ -438,7 +438,7 @@ NSCursor* NSCursorInfo::GetTransparentCursor() const
     }
   }
 
-  moz_free(data);
+  free(data);
 
   // Fall back to an arrow cursor if (for some reason) the above code failed.
   if (!retval) {
@@ -528,7 +528,7 @@ void NSCursorInfo::SetHotSpot(nsPoint aHotSpot)
 void NSCursorInfo::SetCustomImageData(uint8_t* aData, uint32_t aDataLength)
 {
   if (mCustomImageData) {
-    moz_free(mCustomImageData);
+    free(mCustomImageData);
   }
   if (aDataLength) {
     mCustomImageData = (uint8_t*) moz_xmalloc(aDataLength);
diff --git a/dom/xul/nsXULContentSink.cpp b/dom/xul/nsXULContentSink.cpp
index 3b05965fa0e0..bbb1c279eef6 100644
--- a/dom/xul/nsXULContentSink.cpp
+++ b/dom/xul/nsXULContentSink.cpp
@@ -184,7 +184,7 @@ XULContentSinkImpl::~XULContentSinkImpl()
     NS_ASSERTION(mContextStack.Depth() == 0, "Context stack not empty?");
     mContextStack.Clear();
 
-    moz_free(mText);
+    free(mText);
 }
 
 //----------------------------------------------------------------------
@@ -1051,7 +1051,7 @@ XULContentSinkImpl::AddText(const char16_t* aText,
 {
   // Create buffer when we first need it
   if (0 == mTextSize) {
-      mText = (char16_t *) moz_malloc(sizeof(char16_t) * 4096);
+      mText = (char16_t *) malloc(sizeof(char16_t) * 4096);
       if (nullptr == mText) {
           return NS_ERROR_OUT_OF_MEMORY;
       }
@@ -1074,7 +1074,7 @@ XULContentSinkImpl::AddText(const char16_t* aText,
       }
       else {
         mTextSize += aLength;
-        mText = (char16_t *) moz_realloc(mText, sizeof(char16_t) * mTextSize);
+        mText = (char16_t *) realloc(mText, sizeof(char16_t) * mTextSize);
         if (nullptr == mText) {
             return NS_ERROR_OUT_OF_MEMORY;
         }
diff --git a/gfx/2d/Tools.h b/gfx/2d/Tools.h
index d7405c75bce6..40e4de2272e4 100644
--- a/gfx/2d/Tools.h
+++ b/gfx/2d/Tools.h
@@ -134,14 +134,14 @@ struct AlignedArray
     }
 #endif
 
-    moz_free(mStorage);
+    free(mStorage);
     mStorage = nullptr;
     mPtr = nullptr;
   }
 
   MOZ_ALWAYS_INLINE void Realloc(size_t aCount, bool aZero = false)
   {
-    moz_free(mStorage);
+    free(mStorage);
     CheckedInt32 storageByteCount =
       CheckedInt32(sizeof(T)) * aCount + (alignment - 1);
     if (!storageByteCount.isValid()) {
@@ -155,9 +155,9 @@ struct AlignedArray
     if (aZero) {
       // calloc can be more efficient than new[] for large chunks,
       // so we use calloc/malloc/free for everything.
-      mStorage = static_cast<uint8_t *>(moz_calloc(1, storageByteCount.value()));
+      mStorage = static_cast<uint8_t *>(calloc(1, storageByteCount.value()));
     } else {
-      mStorage = static_cast<uint8_t *>(moz_malloc(storageByteCount.value()));
+      mStorage = static_cast<uint8_t *>(malloc(storageByteCount.value()));
     }
     if (!mStorage) {
       mStorage = nullptr;
diff --git a/gfx/graphite2/src/MozGrMalloc.h b/gfx/graphite2/src/MozGrMalloc.h
index 73e5c674f64a..acaae1236c49 100644
--- a/gfx/graphite2/src/MozGrMalloc.h
+++ b/gfx/graphite2/src/MozGrMalloc.h
@@ -6,7 +6,7 @@
 #ifndef MOZ_GR_MALLOC_H
 #define MOZ_GR_MALLOC_H
 
-// Override malloc() and friends to call moz_malloc() etc, so that we get
+// Override malloc() and friends to call moz_xmalloc() etc, so that we get
 // predictable, safe OOM crashes rather than relying on the code to handle
 // allocation failures reliably.
 
@@ -15,6 +15,5 @@
 #define malloc moz_xmalloc
 #define calloc moz_xcalloc
 #define realloc moz_xrealloc
-#define free moz_free
 
 #endif // MOZ_GR_MALLOC_H
diff --git a/gfx/skia/patches/archive/0017-Bug-740194-SkMemory-mozalloc.patch b/gfx/skia/patches/archive/0017-Bug-740194-SkMemory-mozalloc.patch
index 76ae1131fb41..719fda16506f 100644
--- a/gfx/skia/patches/archive/0017-Bug-740194-SkMemory-mozalloc.patch
+++ b/gfx/skia/patches/archive/0017-Bug-740194-SkMemory-mozalloc.patch
@@ -64,10 +64,10 @@ index 0000000..1f16ee5
 +}
 +
 +void sk_free(void* p) {
-+    moz_free(p);
++    free(p);
 +}
 +
 +void* sk_malloc_flags(size_t size, unsigned flags) {
-+    return (flags & SK_MALLOC_THROW) ? moz_xmalloc(size) : moz_malloc(size);
++    return (flags & SK_MALLOC_THROW) ? moz_xmalloc(size) : malloc(size);
 +}
 +
diff --git a/gfx/skia/trunk/src/ports/SkMemory_mozalloc.cpp b/gfx/skia/trunk/src/ports/SkMemory_mozalloc.cpp
index 4ca931267152..f07008589381 100644
--- a/gfx/skia/trunk/src/ports/SkMemory_mozalloc.cpp
+++ b/gfx/skia/trunk/src/ports/SkMemory_mozalloc.cpp
@@ -31,15 +31,15 @@ void* sk_realloc_throw(void* addr, size_t size) {
 }
 
 void sk_free(void* p) {
-    moz_free(p);
+    free(p);
 }
 
 void* sk_malloc_flags(size_t size, unsigned flags) {
-    return (flags & SK_MALLOC_THROW) ? moz_xmalloc(size) : moz_malloc(size);
+    return (flags & SK_MALLOC_THROW) ? moz_xmalloc(size) : malloc(size);
 }
 
 void* sk_calloc(size_t size) {
-    return moz_calloc(size, 1);
+    return calloc(size, 1);
 }
 
 void* sk_calloc_throw(size_t size) {
diff --git a/gfx/thebes/gfxFT2FontList.cpp b/gfx/thebes/gfxFT2FontList.cpp
index 671813b3d6d6..f0dbe3ec1599 100644
--- a/gfx/thebes/gfxFT2FontList.cpp
+++ b/gfx/thebes/gfxFT2FontList.cpp
@@ -107,7 +107,7 @@ public:
             NS_ASSERTION(item, "failed to find zip entry");
 
             uint32_t bufSize = item->RealSize();
-            mFontDataBuf = static_cast<uint8_t*>(moz_malloc(bufSize));
+            mFontDataBuf = static_cast<uint8_t*>(malloc(bufSize));
             if (mFontDataBuf) {
                 nsZipCursor cursor(item, reader, mFontDataBuf, bufSize);
                 cursor.Copy(&bufSize);
@@ -136,7 +136,7 @@ public:
         if (mFace && mOwnsFace) {
             FT_Done_Face(mFace);
             if (mFontDataBuf) {
-                moz_free(mFontDataBuf);
+                free(mFontDataBuf);
             }
         }
     }
diff --git a/gfx/thebes/gfxFont.h b/gfx/thebes/gfxFont.h
index a9a91c0d870a..276802ce5c35 100644
--- a/gfx/thebes/gfxFont.h
+++ b/gfx/thebes/gfxFont.h
@@ -1152,7 +1152,7 @@ public:
         uint32_t size =
             offsetof(gfxShapedWord, mCharGlyphsStorage) +
             aLength * (sizeof(CompressedGlyph) + sizeof(uint8_t));
-        void *storage = moz_malloc(size);
+        void *storage = malloc(size);
         if (!storage) {
             return nullptr;
         }
@@ -1183,7 +1183,7 @@ public:
         uint32_t size =
             offsetof(gfxShapedWord, mCharGlyphsStorage) +
             aLength * (sizeof(CompressedGlyph) + sizeof(char16_t));
-        void *storage = moz_malloc(size);
+        void *storage = malloc(size);
         if (!storage) {
             return nullptr;
         }
@@ -1193,9 +1193,9 @@ public:
     }
 
     // Override operator delete to properly free the object that was
-    // allocated via moz_malloc.
+    // allocated via malloc.
     void operator delete(void* p) {
-        moz_free(p);
+        free(p);
     }
 
     virtual CompressedGlyph *GetCharacterGlyphs() override {
diff --git a/gfx/thebes/gfxImageSurface.cpp b/gfx/thebes/gfxImageSurface.cpp
index 5c1703975796..301d3a4da1d4 100644
--- a/gfx/thebes/gfxImageSurface.cpp
+++ b/gfx/thebes/gfxImageSurface.cpp
@@ -95,7 +95,7 @@ TryAllocAlignedBytes(size_t aSize)
              nullptr : ptr;
 #else
     // Oh well, hope that luck is with us in the allocator
-    return moz_malloc(aSize);
+    return malloc(aSize);
 #endif
 }
 
diff --git a/gfx/thebes/gfxTextRun.cpp b/gfx/thebes/gfxTextRun.cpp
index e6ba986b2acf..0c2c7a566079 100644
--- a/gfx/thebes/gfxTextRun.cpp
+++ b/gfx/thebes/gfxTextRun.cpp
@@ -106,7 +106,7 @@ gfxTextRun::AllocateStorageForTextRun(size_t aSize, uint32_t aLength)
 {
     // Allocate the storage we need, returning nullptr on failure rather than
     // throwing an exception (because web content can create huge runs).
-    void *storage = moz_malloc(aSize + aLength * sizeof(CompressedGlyph));
+    void *storage = malloc(aSize + aLength * sizeof(CompressedGlyph));
     if (!storage) {
         NS_WARNING("failed to allocate storage for text run!");
         return nullptr;
diff --git a/gfx/thebes/gfxTextRun.h b/gfx/thebes/gfxTextRun.h
index 08bf8a200105..afc0e1e7938e 100644
--- a/gfx/thebes/gfxTextRun.h
+++ b/gfx/thebes/gfxTextRun.h
@@ -82,9 +82,9 @@ class gfxTextRun : public gfxShapedText {
 public:
 
     // Override operator delete to properly free the object that was
-    // allocated via moz_malloc.
+    // allocated via malloc.
     void operator delete(void* p) {
-        moz_free(p);
+        free(p);
     }
 
     virtual ~gfxTextRun();
diff --git a/gfx/thebes/gfxUserFontSet.cpp b/gfx/thebes/gfxUserFontSet.cpp
index fde235d4d1f8..eba65c5eabae 100644
--- a/gfx/thebes/gfxUserFontSet.cpp
+++ b/gfx/thebes/gfxUserFontSet.cpp
@@ -675,7 +675,7 @@ gfxUserFontEntry::LoadPlatformFont(const uint8_t* aFontData, uint32_t& aLength)
 
     // The downloaded data can now be discarded; the font entry is using the
     // sanitized copy
-    moz_free((void*)aFontData);
+    free((void*)aFontData);
 
     return fe != nullptr;
 }
@@ -690,7 +690,7 @@ gfxUserFontEntry::Load()
 
 // This is called when a font download finishes.
 // Ownership of aFontData passes in here, and the font set must
-// ensure that it is eventually deleted via moz_free().
+// ensure that it is eventually deleted via free().
 bool
 gfxUserFontEntry::FontDataDownloadComplete(const uint8_t* aFontData,
                                            uint32_t aLength,
@@ -718,7 +718,7 @@ gfxUserFontEntry::FontDataDownloadComplete(const uint8_t* aFontData,
     }
 
     if (aFontData) {
-        moz_free((void*)aFontData);
+        free((void*)aFontData);
     }
 
     // error occurred, load next src
diff --git a/image/decoders/nsBMPDecoder.cpp b/image/decoders/nsBMPDecoder.cpp
index 168364030f2f..94e15b08347f 100644
--- a/image/decoders/nsBMPDecoder.cpp
+++ b/image/decoders/nsBMPDecoder.cpp
@@ -60,7 +60,7 @@ nsBMPDecoder::~nsBMPDecoder()
 {
   delete[] mColors;
   if (mRow) {
-      moz_free(mRow);
+      free(mRow);
   }
 }
 
@@ -430,7 +430,7 @@ nsBMPDecoder::WriteInternal(const char* aBuffer, uint32_t aCount)
       if (mBIH.compression != BI_RLE8 && mBIH.compression != BI_RLE4 &&
           mBIH.compression != BI_ALPHABITFIELDS) {
         // mRow is not used for RLE encoded images
-        mRow = (uint8_t*)moz_malloc((mBIH.width * mBIH.bpp) / 8 + 4);
+        mRow = (uint8_t*)malloc((mBIH.width * mBIH.bpp) / 8 + 4);
         // + 4 because the line is padded to a 4 bit boundary, but
         // I don't want to make exact calculations here, that's unnecessary.
         // Also, it compensates rounding error.
diff --git a/image/decoders/nsGIFDecoder2.cpp b/image/decoders/nsGIFDecoder2.cpp
index f70ab06b9a56..aee5085f0ea5 100644
--- a/image/decoders/nsGIFDecoder2.cpp
+++ b/image/decoders/nsGIFDecoder2.cpp
@@ -93,8 +93,8 @@ nsGIFDecoder2::nsGIFDecoder2(RasterImage* aImage)
 
 nsGIFDecoder2::~nsGIFDecoder2()
 {
-  moz_free(mGIFStruct.local_colormap);
-  moz_free(mGIFStruct.hold);
+  free(mGIFStruct.local_colormap);
+  free(mGIFStruct.hold);
 }
 
 void
@@ -1161,8 +1161,8 @@ nsGIFDecoder2::SetHold(const uint8_t* buf1, uint32_t count1,
                        uint32_t count2 /* = 0 */)
 {
   // We have to handle the case that buf currently points to hold
-  uint8_t* newHold = (uint8_t*) moz_malloc(std::max(uint32_t(MIN_HOLD_SIZE),
-                                            count1 + count2));
+  uint8_t* newHold = (uint8_t*) malloc(std::max(uint32_t(MIN_HOLD_SIZE),
+                                       count1 + count2));
   if (!newHold) {
     mGIFStruct.state = gif_error;
     return false;
@@ -1173,7 +1173,7 @@ nsGIFDecoder2::SetHold(const uint8_t* buf1, uint32_t count1,
     memcpy(newHold + count1, buf2, count2);
   }
 
-  moz_free(mGIFStruct.hold);
+  free(mGIFStruct.hold);
   mGIFStruct.hold = newHold;
   mGIFStruct.bytes_in_hold = count1 + count2;
   return true;
diff --git a/image/decoders/nsICODecoder.cpp b/image/decoders/nsICODecoder.cpp
index dd8ead1bd652..e2ec0cea6a99 100644
--- a/image/decoders/nsICODecoder.cpp
+++ b/image/decoders/nsICODecoder.cpp
@@ -70,7 +70,7 @@ nsICODecoder::nsICODecoder(RasterImage* aImage)
 nsICODecoder::~nsICODecoder()
 {
   if (mRow) {
-    moz_free(mRow);
+    free(mRow);
   }
 }
 
@@ -530,7 +530,7 @@ nsICODecoder::WriteInternal(const char* aBuffer, uint32_t aCount)
           mPos++;
           mRowBytes = 0;
           mCurLine = GetRealHeight();
-          mRow = (uint8_t*)moz_realloc(mRow, rowSize);
+          mRow = (uint8_t*)realloc(mRow, rowSize);
           if (!mRow) {
             PostDecoderError(NS_ERROR_OUT_OF_MEMORY);
             return;
diff --git a/image/decoders/nsPNGDecoder.cpp b/image/decoders/nsPNGDecoder.cpp
index 7ec4b1c25e61..2833cb42bbf0 100644
--- a/image/decoders/nsPNGDecoder.cpp
+++ b/image/decoders/nsPNGDecoder.cpp
@@ -661,7 +661,7 @@ nsPNGDecoder::info_callback(png_structp png_ptr, png_infop info_ptr)
       (channels <= 2 || interlace_type == PNG_INTERLACE_ADAM7)) {
     uint32_t bpp[] = { 0, 3, 4, 3, 4 };
     decoder->mCMSLine =
-      (uint8_t*)moz_malloc(bpp[channels] * width);
+      (uint8_t*)malloc(bpp[channels] * width);
     if (!decoder->mCMSLine) {
       png_longjmp(decoder->mPNG, 5); // NS_ERROR_OUT_OF_MEMORY
     }
@@ -669,7 +669,7 @@ nsPNGDecoder::info_callback(png_structp png_ptr, png_infop info_ptr)
 
   if (interlace_type == PNG_INTERLACE_ADAM7) {
     if (height < INT32_MAX / (width * channels)) {
-      decoder->interlacebuf = (uint8_t*)moz_malloc(channels * width * height);
+      decoder->interlacebuf = (uint8_t*)malloc(channels * width * height);
     }
     if (!decoder->interlacebuf) {
       png_longjmp(decoder->mPNG, 5); // NS_ERROR_OUT_OF_MEMORY
diff --git a/image/encoders/bmp/nsBMPEncoder.cpp b/image/encoders/bmp/nsBMPEncoder.cpp
index 7fd00e591685..0f6a5614cf44 100644
--- a/image/encoders/bmp/nsBMPEncoder.cpp
+++ b/image/encoders/bmp/nsBMPEncoder.cpp
@@ -30,7 +30,7 @@ nsBMPEncoder::nsBMPEncoder() : mImageBufferStart(nullptr),
 nsBMPEncoder::~nsBMPEncoder()
 {
   if (mImageBufferStart) {
-    moz_free(mImageBufferStart);
+    free(mImageBufferStart);
     mImageBufferStart = nullptr;
     mImageBufferCurr = nullptr;
   }
@@ -133,7 +133,7 @@ nsBMPEncoder::StartImageEncode(uint32_t aWidth,
   InitInfoHeader(version, bpp, aWidth, aHeight);
 
   mImageBufferSize = mBMPFileHeader.filesize;
-  mImageBufferStart = static_cast<uint8_t*>(moz_malloc(mImageBufferSize));
+  mImageBufferStart = static_cast<uint8_t*>(malloc(mImageBufferSize));
   if (!mImageBufferStart) {
     return NS_ERROR_OUT_OF_MEMORY;
   }
@@ -316,7 +316,7 @@ NS_IMETHODIMP
 nsBMPEncoder::Close()
 {
   if (mImageBufferStart) {
-    moz_free(mImageBufferStart);
+    free(mImageBufferStart);
     mImageBufferStart = nullptr;
     mImageBufferSize = 0;
     mImageBufferReadPoint = 0;
diff --git a/image/encoders/ico/nsICOEncoder.cpp b/image/encoders/ico/nsICOEncoder.cpp
index b999dbb32c9c..c37a25e3c175 100644
--- a/image/encoders/ico/nsICOEncoder.cpp
+++ b/image/encoders/ico/nsICOEncoder.cpp
@@ -31,7 +31,7 @@ nsICOEncoder::nsICOEncoder() : mImageBufferStart(nullptr),
 nsICOEncoder::~nsICOEncoder()
 {
   if (mImageBufferStart) {
-    moz_free(mImageBufferStart);
+    free(mImageBufferStart);
     mImageBufferStart = nullptr;
     mImageBufferCurr = nullptr;
   }
@@ -120,7 +120,7 @@ nsICOEncoder::AddImageFrame(const uint8_t* aData,
     mContainedEncoder->GetImageBufferUsed(&PNGImageBufferSize);
     mImageBufferSize = ICONFILEHEADERSIZE + ICODIRENTRYSIZE +
                        PNGImageBufferSize;
-    mImageBufferStart = static_cast<uint8_t*>(moz_malloc(mImageBufferSize));
+    mImageBufferStart = static_cast<uint8_t*>(malloc(mImageBufferSize));
     if (!mImageBufferStart) {
       return NS_ERROR_OUT_OF_MEMORY;
     }
@@ -154,7 +154,7 @@ nsICOEncoder::AddImageFrame(const uint8_t* aData,
     mContainedEncoder->GetImageBufferUsed(&BMPImageBufferSize);
     mImageBufferSize = ICONFILEHEADERSIZE + ICODIRENTRYSIZE +
                        BMPImageBufferSize + andMaskSize;
-    mImageBufferStart = static_cast<uint8_t*>(moz_malloc(mImageBufferSize));
+    mImageBufferStart = static_cast<uint8_t*>(malloc(mImageBufferSize));
     if (!mImageBufferStart) {
       return NS_ERROR_OUT_OF_MEMORY;
     }
@@ -334,7 +334,7 @@ NS_IMETHODIMP
 nsICOEncoder::Close()
 {
   if (mImageBufferStart) {
-    moz_free(mImageBufferStart);
+    free(mImageBufferStart);
     mImageBufferStart = nullptr;
     mImageBufferSize = 0;
     mImageBufferReadPoint = 0;
diff --git a/image/encoders/jpeg/nsJPEGEncoder.cpp b/image/encoders/jpeg/nsJPEGEncoder.cpp
index 4d04b3e2fe91..81ca381d576a 100644
--- a/image/encoders/jpeg/nsJPEGEncoder.cpp
+++ b/image/encoders/jpeg/nsJPEGEncoder.cpp
@@ -39,7 +39,7 @@ nsJPEGEncoder::nsJPEGEncoder()
 nsJPEGEncoder::~nsJPEGEncoder()
 {
   if (mImageBuffer) {
-    moz_free(mImageBuffer);
+    free(mImageBuffer);
     mImageBuffer = nullptr;
   }
 }
@@ -243,7 +243,7 @@ NS_IMETHODIMP
 nsJPEGEncoder::Close()
 {
   if (mImageBuffer != nullptr) {
-    moz_free(mImageBuffer);
+    free(mImageBuffer);
     mImageBuffer = nullptr;
     mImageBufferSize = 0;
     mImageBufferUsed = 0;
@@ -404,7 +404,7 @@ nsJPEGEncoder::initDestination(jpeg_compress_struct* cinfo)
   NS_ASSERTION(!that->mImageBuffer, "Image buffer already initialized");
 
   that->mImageBufferSize = 8192;
-  that->mImageBuffer = (uint8_t*)moz_malloc(that->mImageBufferSize);
+  that->mImageBuffer = (uint8_t*)malloc(that->mImageBufferSize);
   that->mImageBufferUsed = 0;
 
   cinfo->dest->next_output_byte = that->mImageBuffer;
@@ -438,11 +438,11 @@ nsJPEGEncoder::emptyOutputBuffer(jpeg_compress_struct* cinfo)
   // expand buffer, just double size each time
   that->mImageBufferSize *= 2;
 
-  uint8_t* newBuf = (uint8_t*)moz_realloc(that->mImageBuffer,
-                                          that->mImageBufferSize);
+  uint8_t* newBuf = (uint8_t*)realloc(that->mImageBuffer,
+                                      that->mImageBufferSize);
   if (!newBuf) {
     // can't resize, just zero (this will keep us from writing more)
-    moz_free(that->mImageBuffer);
+    free(that->mImageBuffer);
     that->mImageBuffer = nullptr;
     that->mImageBufferSize = 0;
     that->mImageBufferUsed = 0;
diff --git a/image/encoders/png/nsPNGEncoder.cpp b/image/encoders/png/nsPNGEncoder.cpp
index d9d34d5cc49f..d21ea4ebdbaa 100644
--- a/image/encoders/png/nsPNGEncoder.cpp
+++ b/image/encoders/png/nsPNGEncoder.cpp
@@ -42,7 +42,7 @@ nsPNGEncoder::nsPNGEncoder() : mPNG(nullptr), mPNGinfo(nullptr),
 nsPNGEncoder::~nsPNGEncoder()
 {
   if (mImageBuffer) {
-    moz_free(mImageBuffer);
+    free(mImageBuffer);
     mImageBuffer = nullptr;
   }
   // don't leak if EndImageEncode wasn't called
@@ -155,7 +155,7 @@ nsPNGEncoder::StartImageEncode(uint32_t aWidth,
   // estimated size. Note: we don't have to worry about freeing this data
   // in this function. It will be freed on object destruction.
   mImageBufferSize = 8192;
-  mImageBuffer = (uint8_t*)moz_malloc(mImageBufferSize);
+  mImageBuffer = (uint8_t*)malloc(mImageBufferSize);
   if (!mImageBuffer) {
     png_destroy_write_struct(&mPNG, &mPNGinfo);
     return NS_ERROR_OUT_OF_MEMORY;
@@ -532,7 +532,7 @@ NS_IMETHODIMP
 nsPNGEncoder::Close()
 {
   if (mImageBuffer != nullptr) {
-    moz_free(mImageBuffer);
+    free(mImageBuffer);
     mImageBuffer = nullptr;
     mImageBufferSize = 0;
     mImageBufferUsed = 0;
@@ -733,11 +733,11 @@ nsPNGEncoder::WriteCallback(png_structp png, png_bytep data,
 
     // expand buffer, just double each time
     that->mImageBufferSize *= 2;
-    uint8_t* newBuf = (uint8_t*)moz_realloc(that->mImageBuffer,
-                                            that->mImageBufferSize);
+    uint8_t* newBuf = (uint8_t*)realloc(that->mImageBuffer,
+                                        that->mImageBufferSize);
     if (!newBuf) {
       // can't resize, just zero (this will keep us from writing more)
-      moz_free(that->mImageBuffer);
+      free(that->mImageBuffer);
       that->mImageBuffer = nullptr;
       that->mImageBufferSize = 0;
       that->mImageBufferUsed = 0;
diff --git a/image/src/imgFrame.cpp b/image/src/imgFrame.cpp
index 4b104cb63e81..aa295aa6aa92 100644
--- a/image/src/imgFrame.cpp
+++ b/image/src/imgFrame.cpp
@@ -161,7 +161,7 @@ imgFrame::~imgFrame()
   MOZ_ASSERT(mAborted || IsImageCompleteInternal());
 #endif
 
-  moz_free(mPalettedImageData);
+  free(mPalettedImageData);
   mPalettedImageData = nullptr;
 }
 
@@ -213,7 +213,7 @@ imgFrame::ReinitForDecoder(const nsIntSize& aImageSize,
   mOptSurface = nullptr;
   mVBuf = nullptr;
   mVBufPtr = nullptr;
-  moz_free(mPalettedImageData);
+  free(mPalettedImageData);
   mPalettedImageData = nullptr;
 
   // Reinitialize.
@@ -274,10 +274,10 @@ imgFrame::InitForDecoder(const nsIntSize& aImageSize,
     // Use the fallible allocator here. Paletted images always use 1 byte per
     // pixel, so calculating the amount of memory we need is straightforward.
     mPalettedImageData =
-      static_cast<uint8_t*>(moz_malloc(PaletteDataLength() +
-                                       (mSize.width * mSize.height)));
+      static_cast<uint8_t*>(malloc(PaletteDataLength() +
+                                   (mSize.width * mSize.height)));
     if (!mPalettedImageData)
-      NS_WARNING("moz_malloc for paletted image data should succeed");
+      NS_WARNING("malloc for paletted image data should succeed");
     NS_ENSURE_TRUE(mPalettedImageData, NS_ERROR_OUT_OF_MEMORY);
   } else {
     MOZ_ASSERT(!mImageSurface, "Called imgFrame::InitForDecoder() twice?");
diff --git a/intl/hyphenation/hnjalloc.h b/intl/hyphenation/hnjalloc.h
index a5e7693227e3..fec3a4bc9009 100644
--- a/intl/hyphenation/hnjalloc.h
+++ b/intl/hyphenation/hnjalloc.h
@@ -14,7 +14,7 @@
 
 #define hnj_malloc(size)      moz_xmalloc(size)
 #define hnj_realloc(p, size)  moz_xrealloc(p, size)
-#define hnj_free(p)           moz_free(p)
+#define hnj_free(p)           free(p)
 
 /*
  * To enable us to load hyphenation dictionaries from arbitrary resource URIs,
diff --git a/intl/locale/mac/nsCollationMacUC.cpp b/intl/locale/mac/nsCollationMacUC.cpp
index c650b252b221..94a1e07614bf 100644
--- a/intl/locale/mac/nsCollationMacUC.cpp
+++ b/intl/locale/mac/nsCollationMacUC.cpp
@@ -40,12 +40,12 @@ nsCollationMacUC::~nsCollationMacUC()
   NS_ASSERTION(NS_SUCCEEDED(res), "CleanUpCollator failed");
   if (mUseICU) {
     if (mLocaleICU) {
-      moz_free(mLocaleICU);
+      free(mLocaleICU);
       mLocaleICU = nullptr;
     }
   } else {
     if (mBuffer) {
-      moz_free(mBuffer);
+      free(mBuffer);
       mBuffer = nullptr;
     }
   }
@@ -111,7 +111,7 @@ nsresult nsCollationMacUC::ConvertLocaleICU(nsILocale* aNSLocale, char** aICULoc
                  NS_ERROR_FAILURE);
   NS_LossyConvertUTF16toASCII tmp(localeString);
   tmp.ReplaceChar('-', '_');
-  char* locale = (char*)moz_malloc(tmp.Length() + 1);
+  char* locale = (char*)malloc(tmp.Length() + 1);
   if (!locale) {
     return NS_ERROR_OUT_OF_MEMORY;
   }
@@ -273,13 +273,13 @@ NS_IMETHODIMP nsCollationMacUC::AllocateRawSortKey(int32_t strength, const nsASt
     do {
       newBufferLen *= 2;
     } while (newBufferLen < maxKeyLen);
-    void* newBuffer = moz_malloc(newBufferLen);
+    void* newBuffer = malloc(newBufferLen);
     if (!newBuffer) {
       return NS_ERROR_OUT_OF_MEMORY;
     }
 
     if (mBuffer) {
-      moz_free(mBuffer);
+      free(mBuffer);
       mBuffer = nullptr;
     }
     mBuffer = newBuffer;
diff --git a/intl/uconv/nsScriptableUConv.cpp b/intl/uconv/nsScriptableUConv.cpp
index 8bca5060544f..510c77c22430 100644
--- a/intl/uconv/nsScriptableUConv.cpp
+++ b/intl/uconv/nsScriptableUConv.cpp
@@ -39,7 +39,7 @@ nsScriptableUnicodeConverter::ConvertFromUnicodeWithLength(const nsAString& aSrc
   const nsAFlatString& flatSrc = PromiseFlatString(aSrc);
   rv = mEncoder->GetMaxLength(flatSrc.get(), inLength, aOutLen);
   if (NS_SUCCEEDED(rv)) {
-    *_retval = (char*)moz_malloc(*aOutLen+1);
+    *_retval = (char*)malloc(*aOutLen+1);
     if (!*_retval)
       return NS_ERROR_OUT_OF_MEMORY;
 
@@ -49,7 +49,7 @@ nsScriptableUnicodeConverter::ConvertFromUnicodeWithLength(const nsAString& aSrc
       (*_retval)[*aOutLen] = '\0';
       return NS_OK;
     }
-    moz_free(*_retval);
+    free(*_retval);
   }
   *_retval = nullptr;
   return NS_ERROR_FAILURE;
@@ -68,7 +68,7 @@ nsScriptableUnicodeConverter::ConvertFromUnicode(const nsAString& aSrc,
     if (!_retval.Assign(str, len, mozilla::fallible)) {
       rv = NS_ERROR_OUT_OF_MEMORY;
     }
-    moz_free(str);
+    free(str);
   }
   return rv;
 }
@@ -81,7 +81,7 @@ nsScriptableUnicodeConverter::FinishWithLength(char **_retval, int32_t* aLength)
 
   int32_t finLength = 32;
 
-  *_retval = (char *)moz_malloc(finLength);
+  *_retval = (char *)malloc(finLength);
   if (!*_retval)
     return NS_ERROR_OUT_OF_MEMORY;
 
@@ -89,7 +89,7 @@ nsScriptableUnicodeConverter::FinishWithLength(char **_retval, int32_t* aLength)
   if (NS_SUCCEEDED(rv))
     *aLength = finLength;
   else
-    moz_free(*_retval);
+    free(*_retval);
 
   return rv;
 
@@ -117,7 +117,7 @@ nsScriptableUnicodeConverter::Finish(nsACString& _retval)
     if (!_retval.Assign(str, len, mozilla::fallible)) {
       rv = NS_ERROR_OUT_OF_MEMORY;
     }
-    moz_free(str);
+    free(str);
   }
   return rv;
 }
@@ -151,7 +151,7 @@ nsScriptableUnicodeConverter::ConvertFromByteArray(const uint8_t* aData,
                               inLength, &outLength);
   if (NS_SUCCEEDED(rv))
   {
-    char16_t* buf = (char16_t*)moz_malloc((outLength+1)*sizeof(char16_t));
+    char16_t* buf = (char16_t*)malloc((outLength+1) * sizeof(char16_t));
     if (!buf)
       return NS_ERROR_OUT_OF_MEMORY;
 
@@ -164,7 +164,7 @@ nsScriptableUnicodeConverter::ConvertFromByteArray(const uint8_t* aData,
         rv = NS_ERROR_OUT_OF_MEMORY;
       }
     }
-    moz_free(buf);
+    free(buf);
     return rv;
   }
   return NS_ERROR_FAILURE;
@@ -193,9 +193,9 @@ nsScriptableUnicodeConverter::ConvertToByteArray(const nsAString& aString,
     return rv;
 
   str.Append(data, len);
-  moz_free(data);
+  free(data);
   // NOTE: this being a byte array, it needs no null termination
-  *_aData = reinterpret_cast<uint8_t*>(moz_malloc(str.Length()));
+  *_aData = reinterpret_cast<uint8_t*>(malloc(str.Length()));
   if (!*_aData)
     return NS_ERROR_OUT_OF_MEMORY;
   memcpy(*_aData, str.get(), str.Length());
@@ -222,7 +222,7 @@ nsScriptableUnicodeConverter::ConvertToInputStream(const nsAString& aString,
 
   rv = inputStream->AdoptData(reinterpret_cast<char*>(data), dataLen);
   if (NS_FAILED(rv)) {
-    moz_free(data);
+    free(data);
     return rv;
   }
 
diff --git a/ipc/keystore/KeyStore.cpp b/ipc/keystore/KeyStore.cpp
index 0371030526e8..c6433789c238 100644
--- a/ipc/keystore/KeyStore.cpp
+++ b/ipc/keystore/KeyStore.cpp
@@ -109,7 +109,7 @@ status_t BnKeystoreService::onTransact(uint32_t code, const Parcel& data, Parcel
         reply->writeInt32(dataLength);
         void* buf = reply->writeInplace(dataLength);
         memcpy(buf, data, dataLength);
-        moz_free(data);
+        free(data);
       } else {
         reply->writeInt32(-1);
       }
@@ -127,7 +127,7 @@ status_t BnKeystoreService::onTransact(uint32_t code, const Parcel& data, Parcel
         reply->writeInt32(dataLength);
         void* buf = reply->writeInplace(dataLength);
         memcpy(buf, data, dataLength);
-        moz_free(data);
+        free(data);
       } else {
         reply->writeInt32(-1);
       }
@@ -153,7 +153,7 @@ status_t BnKeystoreService::onTransact(uint32_t code, const Parcel& data, Parcel
         reply->writeInt32(signResultSize);
         void* buf = reply->writeInplace(signResultSize);
         memcpy(buf, signResult, signResultSize);
-        moz_free(signResult);
+        free(signResult);
       } else {
         reply->writeInt32(-1);
       }
@@ -326,7 +326,7 @@ FormatCaData(const char *aCaData, int aCaDataLength,
   size_t bufSize = strlen(CA_BEGIN) + strlen(CA_END) + strlen(CA_TAILER) * 2 +
                    strlen(aName) * 2 + aCaDataLength + aCaDataLength/CA_LINE_SIZE
                    + 2;
-  char *buf = (char *)moz_malloc(bufSize);
+  char *buf = (char *)malloc(bufSize);
   if (!buf) {
     *aFormatData = nullptr;
     return;
@@ -571,7 +571,7 @@ ResponseCode getPublicKey(const char *aKeyName, const uint8_t **aKeyData,
   }
 
   size_t bufSize = keyItem->len;
-  char *buf = (char *)moz_malloc(bufSize);
+  char *buf = (char *)malloc(bufSize);
   if (!buf) {
     return SYSTEM_ERROR;
   }
@@ -647,7 +647,7 @@ ResponseCode signData(const char *aKeyName, const uint8_t *data, size_t length,
     return SYSTEM_ERROR;
   }
 
-  uint8_t *buf = (uint8_t *)moz_malloc(signItem->len);
+  uint8_t *buf = (uint8_t *)malloc(signItem->len);
   if (!buf) {
     return SYSTEM_ERROR;
   }
@@ -1073,7 +1073,7 @@ KeyStore::ReceiveSocketData(nsAutoPtr<UnixSocketRawData>& aMessage)
           SendResponse(SUCCESS);
           SendData(data, (int)dataLength);
 
-          moz_free((void *)data);
+          free((void *)data);
         }
 
         ResetHandlerInfo();
diff --git a/layout/base/nsBidi.cpp b/layout/base/nsBidi.cpp
index de646ef54e36..ff623bb9200f 100644
--- a/layout/base/nsBidi.cpp
+++ b/layout/base/nsBidi.cpp
@@ -190,7 +190,7 @@ bool nsBidi::GetMemory(void **aMemory, size_t *aSize, bool aMayAllocate, size_t
     if(!aMayAllocate) {
       return false;
     } else {
-      *aMemory=moz_malloc(aSizeNeeded);
+      *aMemory=malloc(aSizeNeeded);
       if (*aMemory!=nullptr) {
         *aSize=aSizeNeeded;
         return true;
@@ -206,7 +206,7 @@ bool nsBidi::GetMemory(void **aMemory, size_t *aSize, bool aMayAllocate, size_t
       return false;
     } else if(aSizeNeeded!=*aSize && aMayAllocate) {
       /* we may try to grow or shrink */
-      void *memory=moz_realloc(*aMemory, aSizeNeeded);
+      void *memory=realloc(*aMemory, aSizeNeeded);
 
       if(memory!=nullptr) {
         *aMemory=memory;
@@ -225,11 +225,11 @@ bool nsBidi::GetMemory(void **aMemory, size_t *aSize, bool aMayAllocate, size_t
 
 void nsBidi::Free()
 {
-  moz_free(mDirPropsMemory);
+  free(mDirPropsMemory);
   mDirPropsMemory = nullptr;
-  moz_free(mLevelsMemory);
+  free(mLevelsMemory);
   mLevelsMemory = nullptr;
-  moz_free(mRunsMemory);
+  free(mRunsMemory);
   mRunsMemory = nullptr;
 }
 
diff --git a/layout/generic/nsFontInflationData.cpp b/layout/generic/nsFontInflationData.cpp
index b6c7ec231056..da9379dc6da4 100644
--- a/layout/generic/nsFontInflationData.cpp
+++ b/layout/generic/nsFontInflationData.cpp
@@ -168,7 +168,7 @@ ComputeDescendantISize(const nsHTMLReflowState& aAncestorReflowState,
   for (uint32_t i = len; i-- != 0; ) {
     reflowStates[i].~nsHTMLReflowState();
   }
-  moz_free(reflowStates);
+  free(reflowStates);
 
   return result;
 }
diff --git a/layout/style/FontFace.cpp b/layout/style/FontFace.cpp
index b9ca5d929877..e90932fb564a 100644
--- a/layout/style/FontFace.cpp
+++ b/layout/style/FontFace.cpp
@@ -50,10 +50,10 @@ GetDataFrom(const T& aObject, uint8_t*& aBuffer, uint32_t& aLength)
 {
   MOZ_ASSERT(!aBuffer);
   aObject.ComputeLengthAndData();
-  // We use moz_malloc here rather than a FallibleTArray or fallible
-  // operator new[] since the gfxUserFontEntry will be calling moz_free
+  // We use malloc here rather than a FallibleTArray or fallible
+  // operator new[] since the gfxUserFontEntry will be calling free
   // on it.
-  aBuffer = (uint8_t*) moz_malloc(aObject.Length());
+  aBuffer = (uint8_t*) malloc(aObject.Length());
   if (!aBuffer) {
     return;
   }
diff --git a/media/webrtc/signaling/src/common/time_profiling/timecard.c b/media/webrtc/signaling/src/common/time_profiling/timecard.c
index cadb9862f44c..e56377534cf5 100644
--- a/media/webrtc/signaling/src/common/time_profiling/timecard.c
+++ b/media/webrtc/signaling/src/common/time_profiling/timecard.c
@@ -21,8 +21,8 @@ create_timecard()
 void
 destroy_timecard(Timecard *tc)
 {
-  moz_free(tc->entries);
-  moz_free(tc);
+  free(tc->entries);
+  free(tc);
 }
 
 void
diff --git a/media/webrtc/signaling/src/sdp/sipcc/cpr_string.c b/media/webrtc/signaling/src/sdp/sipcc/cpr_string.c
index 819d8656fe6e..c210c39714da 100644
--- a/media/webrtc/signaling/src/sdp/sipcc/cpr_string.c
+++ b/media/webrtc/signaling/src/sdp/sipcc/cpr_string.c
@@ -15,7 +15,7 @@
 #define cpr_malloc(a) moz_xmalloc(a)
 #define cpr_calloc(a, b) moz_xcalloc(a, b)
 #define cpr_realloc(a, b) moz_xrealloc(a, b)
-#define cpr_free(a) moz_free(a)
+#define cpr_free(a) free(a)
 
 
 /**
diff --git a/netwerk/base/nsIStreamLoader.idl b/netwerk/base/nsIStreamLoader.idl
index 83bc92c60a7e..2ff420a08bca 100644
--- a/netwerk/base/nsIStreamLoader.idl
+++ b/netwerk/base/nsIStreamLoader.idl
@@ -27,8 +27,8 @@ interface nsIStreamLoaderObserver : nsISupports
      * If the observer wants to take over responsibility for the
      * data buffer (result), it returns NS_SUCCESS_ADOPTED_DATA
      * in place of NS_OK as its success code. The loader will then
-     * "forget" about the data and not moz_free() it after
-     * onStreamComplete() returns; observer must call moz_free()
+     * "forget" about the data and not free() it after
+     * onStreamComplete() returns; observer must call free()
      * when the data is no longer required.
      */
     void onStreamComplete(in nsIStreamLoader loader,
diff --git a/netwerk/base/nsPreloadedStream.cpp b/netwerk/base/nsPreloadedStream.cpp
index 9160a13a5836..3246f34d6353 100644
--- a/netwerk/base/nsPreloadedStream.cpp
+++ b/netwerk/base/nsPreloadedStream.cpp
@@ -28,7 +28,7 @@ nsPreloadedStream::nsPreloadedStream(nsIAsyncInputStream *aStream,
 
 nsPreloadedStream::~nsPreloadedStream()
 {
-    moz_free(mBuf);
+    free(mBuf);
 }
 
 NS_IMETHODIMP
diff --git a/netwerk/base/nsSocketTransportService2.cpp b/netwerk/base/nsSocketTransportService2.cpp
index 3833053c1d46..4761ab697f2c 100644
--- a/netwerk/base/nsSocketTransportService2.cpp
+++ b/netwerk/base/nsSocketTransportService2.cpp
@@ -103,9 +103,9 @@ nsSocketTransportService::~nsSocketTransportService()
     if (mThreadEvent)
         PR_DestroyPollableEvent(mThreadEvent);
 
-    moz_free(mActiveList);
-    moz_free(mIdleList);
-    moz_free(mPollList);
+    free(mActiveList);
+    free(mIdleList);
+    free(mPollList);
     gSocketTransportService = nullptr;
 }
 
diff --git a/netwerk/cache/nsCacheMetaData.cpp b/netwerk/cache/nsCacheMetaData.cpp
index 71025ad96f88..0df867d839cd 100644
--- a/netwerk/cache/nsCacheMetaData.cpp
+++ b/netwerk/cache/nsCacheMetaData.cpp
@@ -151,7 +151,7 @@ nsresult
 nsCacheMetaData::EnsureBuffer(uint32_t bufSize)
 {
     if (mBufferSize < bufSize) {
-        char * buf = (char *)moz_realloc(mBuffer, bufSize);
+        char * buf = (char *)realloc(mBuffer, bufSize);
         if (!buf) {
             return NS_ERROR_OUT_OF_MEMORY;
         }
diff --git a/netwerk/cache/nsCacheMetaData.h b/netwerk/cache/nsCacheMetaData.h
index e0879c1473f2..8ac19125a629 100644
--- a/netwerk/cache/nsCacheMetaData.h
+++ b/netwerk/cache/nsCacheMetaData.h
@@ -18,7 +18,7 @@ public:
 
     ~nsCacheMetaData() {
         mBufferSize = mMetaSize = 0;  
-        moz_free(mBuffer);
+        free(mBuffer);
         mBuffer = nullptr;
     }
 
diff --git a/netwerk/cache2/CacheFileChunk.cpp b/netwerk/cache2/CacheFileChunk.cpp
index 334fe80f3943..8d13330366b6 100644
--- a/netwerk/cache2/CacheFileChunk.cpp
+++ b/netwerk/cache2/CacheFileChunk.cpp
@@ -185,7 +185,7 @@ CacheFileChunk::Read(CacheFileHandle *aHandle, uint32_t aLen,
   mState = READING;
 
   if (CanAllocate(aLen)) {
-    mRWBuf = static_cast<char *>(moz_malloc(aLen));
+    mRWBuf = static_cast<char *>(malloc(aLen));
     if (mRWBuf) {
       mRWBufSize = aLen;
       ChunkAllocationChanged();
@@ -698,7 +698,7 @@ CacheFileChunk::EnsureBufSize(uint32_t aBufSize)
     return mStatus;
   }
 
-  char *newBuf = static_cast<char *>(moz_realloc(mBuf, aBufSize));
+  char *newBuf = static_cast<char *>(realloc(mBuf, aBufSize));
   if (!newBuf) {
     SetError(NS_ERROR_OUT_OF_MEMORY);
     return mStatus;
diff --git a/netwerk/dns/DNS.cpp b/netwerk/dns/DNS.cpp
index 817dc1097f73..0756dca356b1 100644
--- a/netwerk/dns/DNS.cpp
+++ b/netwerk/dns/DNS.cpp
@@ -287,8 +287,8 @@ AddrInfo::~AddrInfo()
   while ((addrElement = mAddresses.popLast())) {
     delete addrElement;
   }
-  moz_free(mHostName);
-  moz_free(mCanonicalName);
+  free(mHostName);
+  free(mCanonicalName);
 }
 
 void
diff --git a/netwerk/protocol/http/SpdyZlibReporter.cpp b/netwerk/protocol/http/SpdyZlibReporter.cpp
index 7348b882b461..f6ae6577e8cc 100644
--- a/netwerk/protocol/http/SpdyZlibReporter.cpp
+++ b/netwerk/protocol/http/SpdyZlibReporter.cpp
@@ -24,7 +24,7 @@ SpdyZlibReporter::Alloc(void*, uInt items, uInt size)
 SpdyZlibReporter::Free(void*, void* p)
 {
   sAmount -= MallocSizeOfOnFree(p);
-  moz_free(p);
+  free(p);
 }
 
 NS_IMETHODIMP
diff --git a/netwerk/protocol/websocket/WebSocketChannel.cpp b/netwerk/protocol/websocket/WebSocketChannel.cpp
index 667c8471aa38..e8e52765e585 100644
--- a/netwerk/protocol/websocket/WebSocketChannel.cpp
+++ b/netwerk/protocol/websocket/WebSocketChannel.cpp
@@ -1170,8 +1170,8 @@ WebSocketChannel::~WebSocketChannel()
   MOZ_ASSERT(!mCancelable, "DNS/Proxy Request still alive at destruction");
   MOZ_ASSERT(!mConnecting, "Should not be connecting in destructor");
 
-  moz_free(mBuffer);
-  moz_free(mDynamicOutput);
+  free(mBuffer);
+  free(mDynamicOutput);
   delete mCurrentOut;
 
   while ((mCurrentOut = (OutboundMessage *) mOutgoingPingMessages.PopFront()))
@@ -1400,7 +1400,7 @@ WebSocketChannel::UpdateReadBuffer(uint8_t *buffer, uint32_t count,
     mBufferSize += count + 8192 + mBufferSize/3;
     LOG(("WebSocketChannel: update read buffer extended to %u\n", mBufferSize));
     uint8_t *old = mBuffer;
-    mBuffer = (uint8_t *)moz_realloc(mBuffer, mBufferSize);
+    mBuffer = (uint8_t *)realloc(mBuffer, mBufferSize);
     if (!mBuffer) {
       mBuffer = old;
       return false;
@@ -1777,7 +1777,7 @@ WebSocketChannel::ProcessInput(uint8_t *buffer, uint32_t count)
     // release memory if we've been processing a large message
     if (mBufferSize > kIncomingBufferStableSize) {
       mBufferSize = kIncomingBufferStableSize;
-      moz_free(mBuffer);
+      free(mBuffer);
       mBuffer = (uint8_t *)moz_xmalloc(mBufferSize);
     }
   }
diff --git a/netwerk/sctp/datachannel/DataChannel.cpp b/netwerk/sctp/datachannel/DataChannel.cpp
index 281cd038f006..0e8b9ea114a9 100644
--- a/netwerk/sctp/datachannel/DataChannel.cpp
+++ b/netwerk/sctp/datachannel/DataChannel.cpp
@@ -1008,7 +1008,7 @@ DataChannelConnection::SendOpenRequestMessage(const nsACString& label,
     break;
   default:
     // FIX! need to set errno!  Or make all these SendXxxx() funcs return 0 or errno!
-    moz_free(req);
+    free(req);
     return (0);
   }
   if (unordered) {
@@ -1025,7 +1025,7 @@ DataChannelConnection::SendOpenRequestMessage(const nsACString& label,
 
   int32_t result = SendControlMessage(req, req_size, stream);
 
-  moz_free(req);
+  free(req);
   return result;
 }
 
@@ -1731,7 +1731,7 @@ DataChannelConnection::SendOutgoingStreamReset()
   } else {
     mStreamsResetting.Clear();
   }
-  moz_free(srs);
+  free(srs);
 }
 
 void
diff --git a/netwerk/sctp/datachannel/DataChannel.h b/netwerk/sctp/datachannel/DataChannel.h
index 7147ded17db7..180568c0978b 100644
--- a/netwerk/sctp/datachannel/DataChannel.h
+++ b/netwerk/sctp/datachannel/DataChannel.h
@@ -83,7 +83,7 @@ public:
 
   ~QueuedDataMessage()
   {
-    moz_free(mData);
+    free(mData);
   }
 
   uint16_t mStream;
diff --git a/netwerk/streamconv/converters/nsBinHexDecoder.cpp b/netwerk/streamconv/converters/nsBinHexDecoder.cpp
index 9c78cebe4a1f..372da8d37517 100644
--- a/netwerk/streamconv/converters/nsBinHexDecoder.cpp
+++ b/netwerk/streamconv/converters/nsBinHexDecoder.cpp
@@ -442,8 +442,8 @@ nsBinHexDecoder::OnStartRequest(nsIRequest* request, nsISupports *aCtxt)
 
   NS_ENSURE_TRUE(mNextListener, NS_ERROR_FAILURE);
 
-  mDataBuffer = (char *) moz_malloc((sizeof(char) * nsIOService::gDefaultSegmentSize));
-  mOutgoingBuffer = (char *) moz_malloc((sizeof(char) * nsIOService::gDefaultSegmentSize));
+  mDataBuffer = (char *) malloc((sizeof(char) * nsIOService::gDefaultSegmentSize));
+  mOutgoingBuffer = (char *) malloc((sizeof(char) * nsIOService::gDefaultSegmentSize));
   if (!mDataBuffer || !mOutgoingBuffer) return NS_ERROR_FAILURE; // out of memory;
 
   // now we want to create a pipe which we'll use to write our converted data...
diff --git a/netwerk/streamconv/converters/nsHTTPCompressConv.cpp b/netwerk/streamconv/converters/nsHTTPCompressConv.cpp
index 656066d27184..d821c919e0c7 100644
--- a/netwerk/streamconv/converters/nsHTTPCompressConv.cpp
+++ b/netwerk/streamconv/converters/nsHTTPCompressConv.cpp
@@ -151,20 +151,20 @@ nsHTTPCompressConv::OnDataAvailable(nsIRequest* request,
 
             if (mInpBuffer != nullptr && streamLen > mInpBufferLen)
             {
-                mInpBuffer = (unsigned char *) moz_realloc(mInpBuffer, mInpBufferLen = streamLen);
+                mInpBuffer = (unsigned char *) realloc(mInpBuffer, mInpBufferLen = streamLen);
                
                 if (mOutBufferLen < streamLen * 2)
-                    mOutBuffer = (unsigned char *) moz_realloc(mOutBuffer, mOutBufferLen = streamLen * 3);
+                    mOutBuffer = (unsigned char *) realloc(mOutBuffer, mOutBufferLen = streamLen * 3);
 
                 if (mInpBuffer == nullptr || mOutBuffer == nullptr)
                     return NS_ERROR_OUT_OF_MEMORY;
             }
 
             if (mInpBuffer == nullptr)
-                mInpBuffer = (unsigned char *) moz_malloc(mInpBufferLen = streamLen);
+                mInpBuffer = (unsigned char *) malloc(mInpBufferLen = streamLen);
 
             if (mOutBuffer == nullptr)
-                mOutBuffer = (unsigned char *) moz_malloc(mOutBufferLen = streamLen * 3);
+                mOutBuffer = (unsigned char *) malloc(mOutBufferLen = streamLen * 3);
 
             if (mInpBuffer == nullptr || mOutBuffer == nullptr)
                 return NS_ERROR_OUT_OF_MEMORY;
diff --git a/parser/html/nsHtml5StreamParser.cpp b/parser/html/nsHtml5StreamParser.cpp
index 536f139ab8c2..5b3d3b907fae 100644
--- a/parser/html/nsHtml5StreamParser.cpp
+++ b/parser/html/nsHtml5StreamParser.cpp
@@ -480,7 +480,7 @@ nsHtml5StreamParser::FinalizeSniffing(const uint8_t* aFromSegment, // can be nul
       {
         (void *(*)(size_t))moz_xmalloc,
         (void *(*)(void *, size_t))moz_xrealloc,
-        moz_free
+        free
       };
 
     static const char16_t kExpatSeparator[] = { 0xFFFF, '\0' };
diff --git a/rdf/base/nsRDFContentSink.cpp b/rdf/base/nsRDFContentSink.cpp
index 8c8eccb3008a..6e9ab71a3d74 100644
--- a/rdf/base/nsRDFContentSink.cpp
+++ b/rdf/base/nsRDFContentSink.cpp
@@ -343,7 +343,7 @@ RDFContentSinkImpl::~RDFContentSinkImpl()
 
         delete mContextStack;
     }
-    moz_free(mText);
+    free(mText);
 
 
     if (--gRefCnt == 0) {
@@ -755,7 +755,7 @@ RDFContentSinkImpl::AddText(const char16_t* aText, int32_t aLength)
 {
     // Create buffer when we first need it
     if (0 == mTextSize) {
-        mText = (char16_t *) moz_malloc(sizeof(char16_t) * 4096);
+        mText = (char16_t *) malloc(sizeof(char16_t) * 4096);
         if (!mText) {
             return NS_ERROR_OUT_OF_MEMORY;
         }
@@ -773,7 +773,7 @@ RDFContentSinkImpl::AddText(const char16_t* aText, int32_t aLength)
         int32_t newSize = (2 * mTextSize > (mTextSize + aLength)) ?
                           (2 * mTextSize) : (mTextSize + aLength);
         char16_t* newText = 
-            (char16_t *) moz_realloc(mText, sizeof(char16_t) * newSize);
+            (char16_t *) realloc(mText, sizeof(char16_t) * newSize);
         if (!newText)
             return NS_ERROR_OUT_OF_MEMORY;
         mTextSize = newSize;
diff --git a/security/manager/ssl/src/nsNSSCallbacks.cpp b/security/manager/ssl/src/nsNSSCallbacks.cpp
index 99fdf76cdcd2..b288cbf0079b 100644
--- a/security/manager/ssl/src/nsNSSCallbacks.cpp
+++ b/security/manager/ssl/src/nsNSSCallbacks.cpp
@@ -609,7 +609,7 @@ nsHTTPListener::~nsHTTPListener()
     send_done_signal();
 
   if (mResultData) {
-    moz_free(const_cast<uint8_t *>(mResultData));
+    free(const_cast<uint8_t *>(mResultData));
   }
 
   if (mLoader) {
diff --git a/storage/src/mozStorageService.cpp b/storage/src/mozStorageService.cpp
index addb88abf947..19131358cf22 100644
--- a/storage/src/mozStorageService.cpp
+++ b/storage/src/mozStorageService.cpp
@@ -402,10 +402,10 @@ namespace {
 // allocated for a given request.  SQLite uses this function before all
 // allocations, and may be able to use any excess bytes caused by the rounding.
 //
-// Note: the wrappers for moz_malloc, moz_realloc and moz_malloc_usable_size
-// are necessary because the sqlite_mem_methods type signatures differ slightly
+// Note: the wrappers for malloc, realloc and moz_malloc_usable_size are
+// necessary because the sqlite_mem_methods type signatures differ slightly
 // from the standard ones -- they use int instead of size_t.  But we don't need
-// a wrapper for moz_free.
+// a wrapper for free.
 
 #ifdef MOZ_DMD
 
@@ -429,7 +429,7 @@ MOZ_DEFINE_MALLOC_SIZE_OF_ON_FREE(SqliteMallocSizeOfOnFree)
 
 static void *sqliteMemMalloc(int n)
 {
-  void* p = ::moz_malloc(n);
+  void* p = ::malloc(n);
 #ifdef MOZ_DMD
   gSqliteMemoryUsed += SqliteMallocSizeOfOnAlloc(p);
 #endif
@@ -441,14 +441,14 @@ static void sqliteMemFree(void *p)
 #ifdef MOZ_DMD
   gSqliteMemoryUsed -= SqliteMallocSizeOfOnFree(p);
 #endif
-  ::moz_free(p);
+  ::free(p);
 }
 
 static void *sqliteMemRealloc(void *p, int n)
 {
 #ifdef MOZ_DMD
   gSqliteMemoryUsed -= SqliteMallocSizeOfOnFree(p);
-  void *pnew = ::moz_realloc(p, n);
+  void *pnew = ::realloc(p, n);
   if (pnew) {
     gSqliteMemoryUsed += SqliteMallocSizeOfOnAlloc(pnew);
   } else {
@@ -457,7 +457,7 @@ static void *sqliteMemRealloc(void *p, int n)
   }
   return pnew;
 #else
-  return ::moz_realloc(p, n);
+  return ::realloc(p, n);
 #endif
 }
 
diff --git a/xpcom/base/nsMemoryImpl.cpp b/xpcom/base/nsMemoryImpl.cpp
index 778ee297025a..5f46c4532a49 100644
--- a/xpcom/base/nsMemoryImpl.cpp
+++ b/xpcom/base/nsMemoryImpl.cpp
@@ -218,7 +218,7 @@ NS_Realloc(void* aPtr, size_t aSize)
 XPCOM_API(void)
 NS_Free(void* aPtr)
 {
-  moz_free(aPtr);
+  free(aPtr);
 }
 
 nsresult
diff --git a/xpcom/glue/nsTArray.h b/xpcom/glue/nsTArray.h
index b0dbc8071319..59b9291970fb 100644
--- a/xpcom/glue/nsTArray.h
+++ b/xpcom/glue/nsTArray.h
@@ -167,13 +167,13 @@ struct nsTArrayInfallibleAllocatorBase
 
 struct nsTArrayFallibleAllocator : nsTArrayFallibleAllocatorBase
 {
-  static void* Malloc(size_t aSize) { return moz_malloc(aSize); }
+  static void* Malloc(size_t aSize) { return malloc(aSize); }
   static void* Realloc(void* aPtr, size_t aSize)
   {
-    return moz_realloc(aPtr, aSize);
+    return realloc(aPtr, aSize);
   }
 
-  static void Free(void* aPtr) { moz_free(aPtr); }
+  static void Free(void* aPtr) { free(aPtr); }
   static void SizeTooBig(size_t) {}
 };
 
@@ -185,7 +185,7 @@ struct nsTArrayInfallibleAllocator : nsTArrayInfallibleAllocatorBase
     return moz_xrealloc(aPtr, aSize);
   }
 
-  static void Free(void* aPtr) { moz_free(aPtr); }
+  static void Free(void* aPtr) { free(aPtr); }
   static void SizeTooBig(size_t aSize) { NS_ABORT_OOM(aSize); }
 };
 
diff --git a/xpcom/io/nsBinaryStream.cpp b/xpcom/io/nsBinaryStream.cpp
index 289730f076c0..88390fb61834 100644
--- a/xpcom/io/nsBinaryStream.cpp
+++ b/xpcom/io/nsBinaryStream.cpp
@@ -228,7 +228,7 @@ nsBinaryOutputStream::WriteWStringZ(const char16_t* aString)
   if (length <= 64) {
     copy = temp;
   } else {
-    copy = reinterpret_cast<char16_t*>(moz_malloc(byteCount));
+    copy = reinterpret_cast<char16_t*>(malloc(byteCount));
     if (!copy) {
       return NS_ERROR_OUT_OF_MEMORY;
     }
@@ -237,7 +237,7 @@ nsBinaryOutputStream::WriteWStringZ(const char16_t* aString)
   mozilla::NativeEndian::copyAndSwapToBigEndian(copy, aString, length);
   rv = WriteBytes(reinterpret_cast<const char*>(copy), byteCount);
   if (copy != temp) {
-    moz_free(copy);
+    free(copy);
   }
 #endif
 
@@ -798,18 +798,18 @@ nsBinaryInputStream::ReadBytes(uint32_t aLength, char** aResult)
   uint32_t bytesRead;
   char* s;
 
-  s = reinterpret_cast<char*>(moz_malloc(aLength));
+  s = reinterpret_cast<char*>(malloc(aLength));
   if (!s) {
     return NS_ERROR_OUT_OF_MEMORY;
   }
 
   rv = Read(s, aLength, &bytesRead);
   if (NS_FAILED(rv)) {
-    moz_free(s);
+    free(s);
     return rv;
   }
   if (bytesRead != aLength) {
-    moz_free(s);
+    free(s);
     return NS_ERROR_FAILURE;
   }
 
diff --git a/xpcom/io/nsLocalFileWin.cpp b/xpcom/io/nsLocalFileWin.cpp
index 2628c8ebd74e..dfb1fa143d84 100644
--- a/xpcom/io/nsLocalFileWin.cpp
+++ b/xpcom/io/nsLocalFileWin.cpp
@@ -1745,7 +1745,7 @@ nsLocalFile::GetVersionInfoField(const char* aField, nsAString& aResult)
       }
     }
   }
-  moz_free(ver);
+  free(ver);
 
   return rv;
 }
diff --git a/xpcom/io/nsScriptableInputStream.cpp b/xpcom/io/nsScriptableInputStream.cpp
index cc4ee1361b2a..ba50edd6316d 100644
--- a/xpcom/io/nsScriptableInputStream.cpp
+++ b/xpcom/io/nsScriptableInputStream.cpp
@@ -58,7 +58,7 @@ nsScriptableInputStream::Read(uint32_t aCount, char** aResult)
   // bug716556 - Ensure count+1 doesn't overflow
   uint32_t count =
     XPCOM_MIN((uint32_t)XPCOM_MIN<uint64_t>(count64, aCount), UINT32_MAX - 1);
-  buffer = (char*)moz_malloc(count + 1);  // make room for '\0'
+  buffer = (char*)malloc(count + 1);  // make room for '\0'
   if (!buffer) {
     return NS_ERROR_OUT_OF_MEMORY;
   }
diff --git a/xpcom/io/nsSegmentedBuffer.cpp b/xpcom/io/nsSegmentedBuffer.cpp
index 849b3cd7cbee..487333f3b394 100644
--- a/xpcom/io/nsSegmentedBuffer.cpp
+++ b/xpcom/io/nsSegmentedBuffer.cpp
@@ -64,7 +64,7 @@ nsSegmentedBuffer::AppendNewSegment()
     mSegmentArrayCount = newArraySize;
   }
 
-  char* seg = (char*)moz_malloc(mSegmentSize);
+  char* seg = (char*)malloc(mSegmentSize);
   if (!seg) {
     return nullptr;
   }
@@ -77,7 +77,7 @@ bool
 nsSegmentedBuffer::DeleteFirstSegment()
 {
   NS_ASSERTION(mSegmentArray[mFirstSegmentIndex] != nullptr, "deleting bad segment");
-  moz_free(mSegmentArray[mFirstSegmentIndex]);
+  free(mSegmentArray[mFirstSegmentIndex]);
   mSegmentArray[mFirstSegmentIndex] = nullptr;
   int32_t last = ModSegArraySize(mLastSegmentIndex - 1);
   if (mFirstSegmentIndex == last) {
@@ -94,7 +94,7 @@ nsSegmentedBuffer::DeleteLastSegment()
 {
   int32_t last = ModSegArraySize(mLastSegmentIndex - 1);
   NS_ASSERTION(mSegmentArray[last] != nullptr, "deleting bad segment");
-  moz_free(mSegmentArray[last]);
+  free(mSegmentArray[last]);
   mSegmentArray[last] = nullptr;
   mLastSegmentIndex = last;
   return (bool)(mLastSegmentIndex == mFirstSegmentIndex);
@@ -105,7 +105,7 @@ nsSegmentedBuffer::ReallocLastSegment(size_t aNewSize)
 {
   int32_t last = ModSegArraySize(mLastSegmentIndex - 1);
   NS_ASSERTION(mSegmentArray[last] != nullptr, "realloc'ing bad segment");
-  char* newSegment = (char*)moz_realloc(mSegmentArray[last], aNewSize);
+  char* newSegment = (char*)realloc(mSegmentArray[last], aNewSize);
   if (newSegment) {
     mSegmentArray[last] = newSegment;
     return true;
@@ -119,7 +119,7 @@ nsSegmentedBuffer::Empty()
   if (mSegmentArray) {
     for (uint32_t i = 0; i < mSegmentArrayCount; i++) {
       if (mSegmentArray[i]) {
-        moz_free(mSegmentArray[i]);
+        free(mSegmentArray[i]);
       }
     }
     nsMemory::Free(mSegmentArray);
diff --git a/xpcom/typelib/xpt/moz.build b/xpcom/typelib/xpt/moz.build
index 0dd5e3a2cd92..af0a016ef8f0 100644
--- a/xpcom/typelib/xpt/moz.build
+++ b/xpcom/typelib/xpt/moz.build
@@ -31,8 +31,8 @@ if CONFIG['_MSC_VER']:
     CFLAGS += ['-Zl']
 
 # Code with FINAL_LIBRARY = 'xul' shouldn't do this, but the code
-# here doesn't use moz_malloc functions anyways, while not setting
+# here doesn't use malloc functions anyways, while not setting
 # MOZ_NO_MOZALLOC makes the code include mozalloc.h, which includes
 # inline operator new definitions that MSVC linker doesn't strip
-# when linking the xpt tests without mozalloc.
+# when linking the xpt tests.
 DEFINES['MOZ_NO_MOZALLOC'] = True