Use newImageSnapshot() to get an image from a Canvas

Source/platform/graphics/Canvas2DLayerBridge.cpp

Index: Source/platform/graphics/Canvas2DLayerBridge.cpp
diff --git a/Source/platform/graphics/Canvas2DLayerBridge.cpp b/Source/platform/graphics/Canvas2DLayerBridge.cpp
index 7d4dbdfeb5ffda1cedadb8ca768f5bef85f0379f..9798eaf66677877753f0ebcfc478f5e65b5e52dc 100644
--- a/Source/platform/graphics/Canvas2DLayerBridge.cpp
+++ b/Source/platform/graphics/Canvas2DLayerBridge.cpp
@@ -30,6 +30,7 @@
 #include "GrContext.h"
 #include "SkDevice.h"
 #include "SkSurface.h"
+
 #include "platform/TraceEvent.h"
 #include "platform/graphics/Canvas2DLayerManager.h"
 #include "platform/graphics/GraphicsLayer.h"
@@ -567,6 +568,11 @@ Platform3DObject Canvas2DLayerBridge::getBackingTexture()
     return 0;
 }
 
+PassRefPtr<SkImage> Canvas2DLayerBridge::newImageSnapshot()
+{
+    return adoptRef(m_canvas->newImageSnapshot());
+}
+
 Canvas2DLayerBridge::MailboxInfo::MailboxInfo(const MailboxInfo& other) {
     // This copy constructor should only be used for Vector reallocation
     // Assuming 'other' is to be destroyed, we transfer m_image ownership