color: Add ColorCanvasExtensions runtime flag

third_party/WebKit/Source/modules/canvas2d/BaseRenderingContext2D.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BaseRenderingContext2D_h
 #define BaseRenderingContext2D_h
 
 #include "bindings/modules/v8/CSSImageValueOrHTMLImageElementOrSVGImageElementOrHTMLVideoElementOrHTMLCanvasElementOrImageBitmapOrOffscreenCanvas.h"
 #include "bindings/modules/v8/StringOrCanvasGradientOrCanvasPattern.h"
 #include "core/html/ImageData.h"
@@ skipping 230 matching lines @@
   virtual bool StateHasFilter() = 0;
   virtual sk_sp<SkImageFilter> StateGetFilter() = 0;
   virtual void SnapshotStateForFilter() = 0;
 
   virtual void ValidateStateStack() const = 0;
 
   virtual bool HasAlpha() const = 0;
 
   virtual bool isContextLost() const = 0;
 
-  virtual ColorBehavior DrawImageColorBehavior() const = 0;
-
   virtual void WillDrawImage(CanvasImageSource*) const {}
 
   virtual CanvasColorSpace ColorSpace() const {
     return kLegacyCanvasColorSpace;
   };
   virtual String ColorSpaceAsString() const {
     return kLegacyCanvasColorSpaceName;
   }
   virtual CanvasPixelFormat PixelFormat() const {
     return kRGBA8CanvasPixelFormat;
@@ skipping 221 matching lines @@
   foreground_flags.setBlendMode(SkBlendMode::kSrcOver);
   c->setMatrix(ctm);
   draw_func(c, &foreground_flags);
   c->restore();
   c->setMatrix(ctm);
 }
 
 }  // namespace blink
 
 #endif  // BaseRenderingContext2D_h