diff --git a/dom/media/BufferMediaResource.h b/dom/media/BufferMediaResource.h
index 8b44b4c6d48a..35e19caca453 100644
--- a/dom/media/BufferMediaResource.h
+++ b/dom/media/BufferMediaResource.h
@@ -68,7 +68,6 @@ private:
     return std::max(aOffset, int64_t(mLength));
   }
   bool IsDataCachedToEndOfResource(int64_t aOffset) override { return true; }
-  bool IsSuspended() override { return false; }
   nsresult ReadFromCache(char* aBuffer,
                          int64_t aOffset,
                          uint32_t aCount) override
diff --git a/dom/media/MediaResource.cpp b/dom/media/MediaResource.cpp
index 86a8f8668cb9..fff55180a4b6 100644
--- a/dom/media/MediaResource.cpp
+++ b/dom/media/MediaResource.cpp
@@ -1163,7 +1163,6 @@ public:
     return std::max(aOffset, mSize);
   }
   bool    IsDataCachedToEndOfResource(int64_t aOffset) override { return true; }
-  bool    IsSuspended() override { return true; }
   bool    IsTransportSeekable() override { return true; }
 
   nsresult GetCachedRanges(MediaByteRangeSet& aRanges) override;
diff --git a/dom/media/MediaResource.h b/dom/media/MediaResource.h
index fff89bb5ff3f..bf6fc42e6db2 100644
--- a/dom/media/MediaResource.h
+++ b/dom/media/MediaResource.h
@@ -202,8 +202,6 @@ public:
   // Returns true if all the data from aOffset to the end of the stream
   // is in cache. If the end of the stream is not known, we return false.
   virtual bool IsDataCachedToEndOfResource(int64_t aOffset) = 0;
-  // Returns true if this stream has been suspended.
-  virtual bool IsSuspended() = 0;
   // Reads only data which is cached in the media cache. If you try to read
   // any data which overlaps uncached data, or if aCount bytes otherwise can't
   // be read, this function will return failure. This function be called from
@@ -459,6 +457,8 @@ public:
   // Resume the current load since data is wanted again
   nsresult CacheClientResume();
 
+  bool IsSuspended();
+
   void ThrottleReadahead(bool bThrottle) override;
 
   // Main thread
@@ -491,7 +491,6 @@ public:
   int64_t GetNextCachedData(int64_t aOffset) override;
   int64_t GetCachedDataEnd(int64_t aOffset) override;
   bool    IsDataCachedToEndOfResource(int64_t aOffset) override;
-  bool    IsSuspended() override;
   bool    IsTransportSeekable() override;
 
   size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const override {
diff --git a/dom/media/gtest/MockMediaResource.h b/dom/media/gtest/MockMediaResource.h
index 7279e74a2ec2..6d1147d52c0d 100644
--- a/dom/media/gtest/MockMediaResource.h
+++ b/dom/media/gtest/MockMediaResource.h
@@ -34,7 +34,6 @@ public:
   {
     return false;
   }
-  bool IsSuspended() override { return false; }
   nsresult ReadFromCache(char* aBuffer, int64_t aOffset,
                          uint32_t aCount) override
   {
diff --git a/dom/media/hls/HLSResource.h b/dom/media/hls/HLSResource.h
index c47a62016871..a7eed02eaea5 100644
--- a/dom/media/hls/HLSResource.h
+++ b/dom/media/hls/HLSResource.h
@@ -57,7 +57,6 @@ public:
   int64_t GetNextCachedData(int64_t aOffset) override { UNIMPLEMENTED(); return -1; }
   int64_t GetCachedDataEnd(int64_t aOffset) override { UNIMPLEMENTED(); return -1; }
   bool IsDataCachedToEndOfResource(int64_t aOffset) override { UNIMPLEMENTED(); return false; }
-  bool IsSuspended() override { UNIMPLEMENTED(); return false; }
   nsresult ReadFromCache(char* aBuffer, int64_t aOffset, uint32_t aCount) override { UNIMPLEMENTED(); return NS_ERROR_FAILURE; }
 
   already_AddRefed<nsIPrincipal> GetCurrentPrincipal() override
diff --git a/dom/media/mediasource/MediaSourceResource.h b/dom/media/mediasource/MediaSourceResource.h
index 8a8358d4313d..b1fb54873ba0 100644
--- a/dom/media/mediasource/MediaSourceResource.h
+++ b/dom/media/mediasource/MediaSourceResource.h
@@ -41,7 +41,6 @@ public:
   int64_t GetNextCachedData(int64_t aOffset) override { UNIMPLEMENTED(); return -1; }
   int64_t GetCachedDataEnd(int64_t aOffset) override { UNIMPLEMENTED(); return -1; }
   bool IsDataCachedToEndOfResource(int64_t aOffset) override { UNIMPLEMENTED(); return false; }
-  bool IsSuspended() override { UNIMPLEMENTED(); return false; }
   nsresult ReadFromCache(char* aBuffer, int64_t aOffset, uint32_t aCount) override { UNIMPLEMENTED(); return NS_ERROR_FAILURE; }
 
   already_AddRefed<nsIPrincipal> GetCurrentPrincipal() override
diff --git a/dom/media/mediasource/SourceBufferResource.h b/dom/media/mediasource/SourceBufferResource.h
index 73e4d52a672f..46847d1c5243 100644
--- a/dom/media/mediasource/SourceBufferResource.h
+++ b/dom/media/mediasource/SourceBufferResource.h
@@ -69,11 +69,6 @@ public:
     return GetLength();
   }
   bool IsDataCachedToEndOfResource(int64_t aOffset) override { return false; }
-  bool IsSuspended() override
-  {
-    UNIMPLEMENTED();
-    return false;
-  }
   nsresult ReadFromCache(char* aBuffer,
                          int64_t aOffset,
                          uint32_t aCount) override;