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

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

 /*
  * Copyright (C) 2006 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Apple 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 48 matching lines @@
     bool currentFrameHasSingleSecurityOrigin() const override;
 
     void startAnimation(CatchUpAnimation = CatchUp) override;
     void resetAnimation() override;
 
     // Advances an animated image. This will trigger an animation update for CSS
     // and advance the SMIL timeline by one frame.
     void advanceAnimationForTesting() override;
     SVGImageChromeClient& chromeClientForTesting();
 
-    PassRefPtr<SkImage> imageForCurrentFrame() override;
+    PassRefPtr<SkImage> imageForCurrentFrame(WebGraphicsContext3DProvider* = nullptr) override;
 
     // Does the SVG image/document contain any animations?
     bool hasAnimations() const;
     // Service CSS and SMIL animations.
     void serviceAnimations(double monotonicAnimationStartTime);
 
     void updateUseCounters(Document&) const;
 
     // The defaultObjectSize is assumed to be unzoomed, i.e. it should
     // not have the effective zoom level applied. The returned size is
@@ skipping 64 matching lines @@
     {
         m_image->setImageObserverDisabled(false);
     }
 private:
     Image* m_image;
 };
 
 } // namespace blink
 
 #endif // SVGImage_h