Use newImageSnapshot() to get an image from a Canvas

Source/platform/graphics/Canvas2DLayerBridge.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
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  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 #ifndef Canvas2DLayerBridge_h
 #define Canvas2DLayerBridge_h
 
-#include "SkDeferredCanvas.h"
-#include "SkImage.h"
 #include "platform/PlatformExport.h"
 #include "platform/geometry/IntSize.h"
 #include "platform/graphics/ImageBufferSurface.h"
 #include "public/platform/WebExternalTextureLayer.h"
 #include "public/platform/WebExternalTextureLayerClient.h"
 #include "public/platform/WebExternalTextureMailbox.h"
 #include "third_party/khronos/GLES2/gl2.h"
+#include "third_party/skia/include/core/SkImage.h"
+#include "third_party/skia/include/utils/SkDeferredCanvas.h"
 #include "wtf/DoublyLinkedList.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/RefPtr.h"
 
 class Canvas2DLayerBridgeTest;
 
 namespace blink {
 
 class ImageBuffer;
@@ skipping 36 matching lines @@
     size_t bytesAllocated() const { return m_bytesAllocated; }
     void limitPendingFrames();
     void freeReleasedMailbox();
     bool hasReleasedMailbox() const;
     void freeTransientResources();
     bool hasTransientResources() const;
     bool isHidden() { return m_isHidden; }
 
     void beginDestruction();
 
+    PassRefPtr<SkImage> newImageSnapshot();
+
 protected:
     Canvas2DLayerBridge(PassOwnPtr<WebGraphicsContext3DProvider>, PassOwnPtr<SkDeferredCanvas>, PassRefPtr<SkSurface>, int, OpacityMode);
     void setRateLimitingEnabled(bool);
     bool releasedMailboxHasExpired();
     WebGraphicsContext3D* context();
 
     OwnPtr<SkDeferredCanvas> m_canvas;
     RefPtr<SkSurface> m_surface;
     OwnPtr<WebExternalTextureLayer> m_layer;
     OwnPtr<WebGraphicsContext3DProvider> m_contextProvider;
@@ skipping 32 matching lines @@
     MailboxInfo* releasedMailboxInfo();
 
     uint32_t m_lastImageId;
     Vector<MailboxInfo> m_mailboxes;
     int m_releasedMailboxInfoIndex;
 };
 
 } // namespace blink
 
 #endif