diff -r 000000000000 -r 6474c204b198 gfx/layers/ipc/SharedRGBImage.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/layers/ipc/SharedRGBImage.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,68 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef SHAREDRGBIMAGE_H_
+#define SHAREDRGBIMAGE_H_
+
+#include <stddef.h>                     // for size_t
+#include <stdint.h>                     // for uint8_t
+#include "ImageContainer.h"             // for ISharedImage, Image, etc
+#include "gfxTypes.h"
+#include "mozilla/Attributes.h"         // for MOZ_OVERRIDE
+#include "mozilla/RefPtr.h"             // for RefPtr
+#include "mozilla/gfx/Point.h"          // for IntSize
+#include "mozilla/gfx/Types.h"          // for SurfaceFormat
+#include "nsCOMPtr.h"                   // for already_AddRefed
+
+namespace mozilla {
+namespace ipc {
+class Shmem;
+}
+
+namespace layers {
+
+class BufferTextureClient;
+class ImageClient;
+class ISurfaceAllocator;
+class TextureClient;
+class SurfaceDescriptor;
+
+already_AddRefed<Image> CreateSharedRGBImage(ImageContainer* aImageContainer,
+                                             nsIntSize aSize,
+                                             gfxImageFormat aImageFormat);
+
+/**
+ * Stores RGB data in shared memory
+ * It is assumed that the image width and stride are equal
+ */
+class SharedRGBImage : public Image
+                     , public ISharedImage
+{
+public:
+  SharedRGBImage(ImageClient* aCompositable);
+  ~SharedRGBImage();
+
+  virtual ISharedImage* AsSharedImage() MOZ_OVERRIDE { return this; }
+
+  virtual TextureClient* GetTextureClient(CompositableClient* aClient) MOZ_OVERRIDE;
+
+  virtual uint8_t* GetBuffer() MOZ_OVERRIDE;
+
+  gfx::IntSize GetSize();
+
+  size_t GetBufferSize();
+
+  TemporaryRef<gfx::SourceSurface> GetAsSourceSurface();
+
+  bool Allocate(gfx::IntSize aSize, gfx::SurfaceFormat aFormat);
+private:
+  gfx::IntSize mSize;
+  RefPtr<ImageClient> mCompositable;
+  RefPtr<BufferTextureClient> mTextureClient;
+};
+
+} // namespace layers
+} // namespace mozilla
+
+#endif