Use newImageSnapshot() to get an image from a Canvas

Source/platform/graphics/Image.cpp

 /*
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 21 matching lines @@
 #include "platform/SharedBuffer.h"
 #include "platform/TraceEvent.h"
 #include "platform/geometry/FloatPoint.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/geometry/FloatSize.h"
 #include "platform/graphics/BitmapImage.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/GraphicsContextStateSaver.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebData.h"
+#include "third_party/skia/include/core/SkImage.h"
 #include "wtf/MainThread.h"
 #include "wtf/StdLibExtras.h"
 
 #include <math.h>
 
 namespace blink {
 
 Image::Image(ImageObserver* observer)
     : m_imageObserver(observer)
 {
@@ skipping 185 matching lines @@
     intrinsicHeight = Length(intrinsicRatio.height(), Fixed);
 }
 
 PassRefPtr<Image> Image::imageForDefaultFrame()
 {
     RefPtr<Image> image(this);
 
     return image.release();
 }
 
+PassRefPtr<SkImage> Image::image()
+{
+    return nullptr;
 }
+
+}