Avoid GPU readback in tex(Sub)Image2D(ImageBitmap)

third_party/WebKit/Source/core/svg/graphics/SVGImage.cpp

 /*
  * Copyright (C) 2006 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. 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 241 matching lines @@
     scaledSrc.scale(1 / zoom);
 
     // Compensate for the container size rounding by adjusting the source rect.
     FloatSize adjustedSrcSize = scaledSrc.size();
     adjustedSrcSize.scale(roundedContainerSize.width() / containerSize.width(), roundedContainerSize.height() / containerSize.height());
     scaledSrc.setSize(adjustedSrcSize);
 
     drawInternal(canvas, paint, dstRect, scaledSrc, DoNotRespectImageOrientation, ClampImageToSourceRect, url);
 }
 
-PassRefPtr<SkImage> SVGImage::imageForCurrentFrame()
+PassRefPtr<SkImage> SVGImage::imageForCurrentFrame(WebGraphicsContext3DProvider* contextProvider)
 {
     return imageForCurrentFrameForContainer(KURL(), FloatSize(size()));
 }
 
 void SVGImage::drawPatternForContainer(GraphicsContext& context, const FloatSize containerSize,
     float zoom, const FloatRect& srcRect, const FloatSize& tileScale, const FloatPoint& phase,
     SkXfermode::Mode compositeOp, const FloatRect& dstRect,
     const FloatSize& repeatSpacing, const KURL& url)
 {
     // Tile adjusted for scaling/stretch.
@@ skipping 288 matching lines @@
 
     return m_page;
 }
 
 String SVGImage::filenameExtension() const
 {
     return "svg";
 }
 
 } // namespace blink