color: Add ColorCanvasExtensions runtime flag

third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2D.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc.
  * All rights reserved.
  * Copyright (C) 2008, 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  * Copyright (C) 2012, 2013 Intel Corporation. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
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 }
 
 String CanvasRenderingContext2D::ColorSpaceAsString() const {
   return CanvasRenderingContext::ColorSpaceAsString();
 }
 
 CanvasPixelFormat CanvasRenderingContext2D::PixelFormat() const {
   return color_params().pixel_format();
 }
 
-ColorBehavior CanvasRenderingContext2D::DrawImageColorBehavior() const {
-  return CanvasRenderingContext::ColorBehaviorForMediaDrawnToCanvas();
-}
-
 void CanvasRenderingContext2D::Reset() {
   // This is a multiple inherritance bootstrap
   BaseRenderingContext2D::Reset();
 }
 
 void CanvasRenderingContext2D::RestoreCanvasMatrixClipStack(
     PaintCanvas* c) const {
   RestoreMatrixClipStack(c);
 }
 
@@ skipping 882 matching lines @@
   }
   return true;
 }
 
 void CanvasRenderingContext2D::ResetUsageTracking() {
   UsageCounters new_counters;
   usage_counters_ = new_counters;
 }
 
 }  // namespace blink