Use newImageSnapshot() to get an image from a Canvas

Source/platform/graphics/Image.h

Index: Source/platform/graphics/Image.h
diff --git a/Source/platform/graphics/Image.h b/Source/platform/graphics/Image.h
index b1ddfcb8b874449dbeeff908ae6605acfe32b3ec..43f673855f92eb7d69beb8f8032467f67b1bb1d0 100644
--- a/Source/platform/graphics/Image.h
+++ b/Source/platform/graphics/Image.h
@@ -33,6 +33,7 @@
 #include "platform/graphics/GraphicsTypes.h"
 #include "platform/graphics/ImageOrientation.h"
 #include "platform/graphics/skia/NativeImageSkia.h"
+#include "third_party/skia/include/core/SkImage.h"

[Justin Novosad, 2014/07/29 14:56:52]

forward declare instead.

[Rémi Piotaix, 2014/07/29 17:18:22]

Done.

 #include "third_party/skia/include/core/SkXfermode.h"
 #include "wtf/Assertions.h"
 #include "wtf/PassRefPtr.h"
@@ -69,6 +70,8 @@ public:
     virtual bool isBitmapImage() const { return false; }
     virtual bool currentFrameKnownToBeOpaque() = 0;
 
+    virtual PassRefPtr<SkImage> image() { return nullptr; }

[Justin Novosad, 2014/07/29 14:56:52]

move to .cpp if SkImage is forward declared.

[Rémi Piotaix, 2014/07/29 17:18:22]

Done.

+
     // Derived classes should override this if they can assure that the current
     // image frame contains only resources from its own security origin.
     virtual bool currentFrameHasSingleSecurityOrigin() const { return false; }