getImageData now finalizesFrame and disableAcceleration updates composit

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 169 matching lines @@
                                const CanvasImageSourceUnion&,
                                const String& repetition_type,
                                ExceptionState&);
   CanvasPattern* createPattern(ScriptState*,
                                CanvasImageSource*,
                                const String& repetition_type,
                                ExceptionState&);
 
   ImageData* createImageData(ImageData*, ExceptionState&) const;
   ImageData* createImageData(int width, int height, ExceptionState&) const;
-  ImageData* getImageData(int sx,
-                          int sy,
-                          int sw,
-                          int sh,
-                          ExceptionState&) const;
+  ImageData* getImageData(int sx, int sy, int sw, int sh, ExceptionState&);
   void putImageData(ImageData*, int dx, int dy, ExceptionState&);
   void putImageData(ImageData*,
                     int dx,
                     int dy,
                     int dirty_x,
                     int dirty_y,
                     int dirty_width,
                     int dirty_height,
                     ExceptionState&);
 
@@ skipping 130 matching lines @@
   void TrackDrawCall(DrawCallType,
                      Path2D* path2d = nullptr,
                      int width = 0,
                      int height = 0);
 
   mutable UsageCounters usage_counters_;
 
   float EstimateRenderingCost(
       ExpensiveCanvasHeuristicParameters::RenderingModeCostIndex) const;
 
+  virtual void NeedsFinalizeFrame(){};
+
  private:
   void RealizeSaves();
 
   bool ShouldDrawImageAntialiased(const FloatRect& dest_rect) const;
 
   void DrawPathInternal(const Path&,
                         CanvasRenderingContext2DState::PaintType,
                         SkPath::FillType = SkPath::kWinding_FillType);
   void DrawImageInternal(PaintCanvas*,
                          CanvasImageSource*,
@@ skipping 111 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