Use newImageSnapshot() to get an image from a Canvas

Source/core/html/HTMLCanvasElement.cpp

 /*
  * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. 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.
@@ skipping 31 matching lines @@
 #include "core/html/canvas/WebGLContextAttributes.h"
 #include "core/html/canvas/WebGLContextEvent.h"
 #include "core/html/canvas/WebGLRenderingContext.h"
 #include "core/rendering/RenderHTMLCanvas.h"
 #include "platform/MIMETypeRegistry.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/Canvas2DImageBufferSurface.h"
 #include "platform/graphics/GraphicsContextStateSaver.h"
 #include "platform/graphics/ImageBuffer.h"
 #include "platform/graphics/RecordingImageBufferSurface.h"
+#include "platform/graphics/StaticBitmapImage.h"
 #include "platform/graphics/UnacceleratedImageBufferSurface.h"
 #include "platform/graphics/gpu/WebGLImageBufferSurface.h"
 #include "platform/transforms/AffineTransform.h"
 #include "public/platform/Platform.h"
 #include <math.h>
 #include <v8.h>
 
 namespace blink {
 
 using namespace HTMLNames;
@@ skipping 626 matching lines @@
     if (!width() || !height()) {
         *status = ZeroSizeCanvasSourceImageStatus;
         return nullptr;
     }
 
     if (!buffer()) {
         *status = InvalidSourceImageStatus;
         return nullptr;
     }
 
-    if (mode == CopySourceImageIfVolatile) {
-        *status = NormalSourceImageStatus;
-        return copiedImage();
-    }
-
     if (m_context && m_context->is3d()) {
         m_context->paintRenderingResultsToCanvas();
         *status = ExternalSourceImageStatus;
+
+        // can't create SkImage from WebGLImageBufferSurface (contains only SkBitmap)
+        return m_imageBuffer->copyImage(DontCopyBackingStore, Unscaled);
     } else {
         *status = NormalSourceImageStatus;
     }
-    return m_imageBuffer->copyImage(DontCopyBackingStore, Unscaled);
+
+    return StaticBitmapImage::create(m_imageBuffer->newImageSnapshot());
 }
 
 bool HTMLCanvasElement::wouldTaintOrigin(SecurityOrigin*) const
 {
     return !originClean();
 }
 
 FloatSize HTMLCanvasElement::sourceSize() const
 {
     return FloatSize(width(), height());
 }
 
 }