diff --git a/gfx/layers/client/TextureClient.cpp b/gfx/layers/client/TextureClient.cpp
index c86dfdaa62e4..f1a911e1e6bf 100644
--- a/gfx/layers/client/TextureClient.cpp
+++ b/gfx/layers/client/TextureClient.cpp
@@ -97,7 +97,6 @@ TextureClientShmem::SetDescriptor(const SurfaceDescriptor& aDescriptor)
 
   NS_ASSERTION(mDescriptor.type() == SurfaceDescriptor::TSurfaceDescriptorGralloc ||
                mDescriptor.type() == SurfaceDescriptor::TShmem ||
-               mDescriptor.type() == SurfaceDescriptor::TMemoryImage ||
                mDescriptor.type() == SurfaceDescriptor::TRGBImage,
                "Invalid surface descriptor");
 }
diff --git a/gfx/layers/ipc/ISurfaceAllocator.cpp b/gfx/layers/ipc/ISurfaceAllocator.cpp
index 05c1ca574c05..2103266dd9b7 100644
--- a/gfx/layers/ipc/ISurfaceAllocator.cpp
+++ b/gfx/layers/ipc/ISurfaceAllocator.cpp
@@ -13,7 +13,6 @@
 #include "mozilla/layers/LayersSurfaces.h"
 #include "mozilla/layers/SharedPlanarYCbCrImage.h"
 #include "mozilla/layers/SharedRGBImage.h"
-#include "nsXULAppAPI.h"
 
 #ifdef DEBUG
 #include "prenv.h"
@@ -86,17 +85,6 @@ ISurfaceAllocator::AllocSurfaceDescriptorWithCaps(const gfxIntSize& aSize,
     return true;
   }
 
-  if (XRE_GetProcessType() == GeckoProcessType_Default) {
-    gfxImageFormat format = aContent == gfxASurface::CONTENT_COLOR_ALPHA ?
-                            gfxASurface::ImageFormatARGB32 :
-                            gfxASurface::ImageFormatRGB24;
-    int32_t stride = gfxASurface::FormatStrideForWidth(format, aSize.width);
-    uint8_t *data = new uint8_t[stride * aSize.height];
-
-    *aBuffer = MemoryImage((uintptr_t)data, aSize, stride, format);
-    return true;
-  }
-
   nsRefPtr<gfxSharedImageSurface> buffer;
   if (!AllocSharedImageSurface(aSize, aContent,
                                getter_AddRefs(buffer))) {
@@ -134,9 +122,6 @@ ISurfaceAllocator::DestroySharedSurface(SurfaceDescriptor* aSurface)
       break;
     case SurfaceDescriptor::TSurfaceDescriptorD3D10:
       break;
-    case SurfaceDescriptor::TMemoryImage:
-      delete [] (unsigned char *)aSurface->get_MemoryImage().data();
-      break;
     case SurfaceDescriptor::Tnull_t:
     case SurfaceDescriptor::T__None:
       break;
diff --git a/gfx/layers/ipc/LayersSurfaces.ipdlh b/gfx/layers/ipc/LayersSurfaces.ipdlh
index 22ac5ba9f1b9..29dbadd7ba1f 100644
--- a/gfx/layers/ipc/LayersSurfaces.ipdlh
+++ b/gfx/layers/ipc/LayersSurfaces.ipdlh
@@ -83,13 +83,6 @@ struct RGBImage {
   uint64_t owner;
 };
 
-struct MemoryImage {
-  uintptr_t data;
-  gfxIntSize size;
-  uint32_t stride;
-  uint32_t format;
-};
-
 union SurfaceDescriptor {
   Shmem;
   SurfaceDescriptorD3D10;
@@ -99,7 +92,6 @@ union SurfaceDescriptor {
   RGBImage;
   SharedTextureDescriptor;
   SurfaceStreamDescriptor;
-  MemoryImage;
   null_t;
 };
 
diff --git a/gfx/layers/ipc/ShadowLayerUtilsMac.cpp b/gfx/layers/ipc/ShadowLayerUtilsMac.cpp
index 7db2cd86af6b..3a965d29df2d 100644
--- a/gfx/layers/ipc/ShadowLayerUtilsMac.cpp
+++ b/gfx/layers/ipc/ShadowLayerUtilsMac.cpp
@@ -32,22 +32,10 @@ ISurfaceAllocator::PlatformAllocSurfaceDescriptor(const gfxIntSize& aSize,
 ShadowLayerForwarder::PlatformOpenDescriptor(OpenMode aMode,
                                              const SurfaceDescriptor& aSurface)
 {
-  if (aSurface.type() == SurfaceDescriptor::TShmem) {
-    return gfxSharedQuartzSurface::Open(aSurface.get_Shmem());
-  } else if (aSurface.type() == SurfaceDescriptor::TMemoryImage) {
-    const MemoryImage& image = aSurface.get_MemoryImage();
-    gfxASurface::gfxImageFormat format
-      = static_cast<gfxASurface::gfxImageFormat>(image.format());
-
-    nsRefPtr<gfxASurface> surf =
-      new gfxQuartzSurface((unsigned char*)image.data(),
-                           image.size(),
-                           image.stride(),
-                           format);
-    return surf.forget();
-
+  if (SurfaceDescriptor::TShmem != aSurface.type()) {
+    return nullptr;
   }
-  return nullptr;
+  return gfxSharedQuartzSurface::Open(aSurface.get_Shmem());
 }
 
 /*static*/ bool
diff --git a/gfx/layers/ipc/ShadowLayers.cpp b/gfx/layers/ipc/ShadowLayers.cpp
index 23f2e9cffd2d..6a78a1872545 100644
--- a/gfx/layers/ipc/ShadowLayers.cpp
+++ b/gfx/layers/ipc/ShadowLayers.cpp
@@ -530,16 +530,6 @@ ShadowLayerForwarder::OpenDescriptor(OpenMode aMode,
                                rgbFormat);
     return surf.forget();
   }
-  case SurfaceDescriptor::TMemoryImage: {
-    const MemoryImage& image = aSurface.get_MemoryImage();
-    gfxASurface::gfxImageFormat format
-      = static_cast<gfxASurface::gfxImageFormat>(image.format());
-    surf = new gfxImageSurface((unsigned char *)image.data(),
-                               image.size(),
-                               image.stride(),
-                               format);
-    return surf.forget();
-  }
   default:
     NS_ERROR("unexpected SurfaceDescriptor type!");
     return nullptr;
diff --git a/gfx/thebes/gfxQuartzSurface.cpp b/gfx/thebes/gfxQuartzSurface.cpp
index d7ca3bb1574e..358580dbc36b 100644
--- a/gfx/thebes/gfxQuartzSurface.cpp
+++ b/gfx/thebes/gfxQuartzSurface.cpp
@@ -125,29 +125,6 @@ gfxQuartzSurface::gfxQuartzSurface(unsigned char *data,
     }
 }
 
-gfxQuartzSurface::gfxQuartzSurface(unsigned char *data,
-                                   const gfxIntSize& aSize,
-                                   long stride,
-                                   gfxImageFormat format,
-                                   bool aForPrinting)
-    : mCGContext(nullptr), mSize(aSize.width, aSize.height), mForPrinting(aForPrinting)
-{
-    if (!CheckSurfaceSize(aSize))
-        MakeInvalid();
-
-    cairo_surface_t *surf = cairo_quartz_surface_create_for_data
-        (data, (cairo_format_t) format, aSize.width, aSize.height, stride);
-
-    mCGContext = cairo_quartz_surface_get_cg_context (surf);
-
-    CGContextRetain(mCGContext);
-
-    Init(surf);
-    if (mSurfaceValid) {
-      RecordMemoryUsed(mSize.height * stride + sizeof(gfxQuartzSurface));
-    }
-}
-
 already_AddRefed<gfxASurface>
 gfxQuartzSurface::CreateSimilarSurface(gfxContentType aType,
                                        const gfxIntSize& aSize)
diff --git a/gfx/thebes/gfxQuartzSurface.h b/gfx/thebes/gfxQuartzSurface.h
index dbbb6f951909..171d5cb0a047 100644
--- a/gfx/thebes/gfxQuartzSurface.h
+++ b/gfx/thebes/gfxQuartzSurface.h
@@ -20,7 +20,6 @@ public:
     gfxQuartzSurface(CGContextRef context, const gfxIntSize& size, bool aForPrinting = false);
     gfxQuartzSurface(cairo_surface_t *csurf, bool aForPrinting = false);
     gfxQuartzSurface(unsigned char *data, const gfxSize& size, long stride, gfxImageFormat format, bool aForPrinting = false);
-    gfxQuartzSurface(unsigned char *data, const gfxIntSize& size, long stride, gfxImageFormat format, bool aForPrinting = false);
 
     virtual ~gfxQuartzSurface();