Refactor ImageBuffer to make OffscreenCanvas match HTMLCanvasElement

third_party/WebKit/Source/core/frame/ImageBitmap.h

 // Copyright 2013 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 ImageBitmap_h
 #define ImageBitmap_h
 
 #include <memory>
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
@@ skipping 99 matching lines @@
   bool IsPremultiplied() const { return image_->IsPremultiplied(); }
   PassRefPtr<StaticBitmapImage> Transfer();
   void close();
 
   ~ImageBitmap() override;
 
   // CanvasImageSource implementation
   PassRefPtr<Image> GetSourceImageForCanvas(SourceImageStatus*,
                                             AccelerationHint,
                                             SnapshotReason,
-                                            const FloatSize&) const override;
+                                            const FloatSize&) override;
   bool WouldTaintOrigin(SecurityOrigin*) const override {
     return !image_->OriginClean();
   }
   void AdjustDrawRects(FloatRect* src_rect, FloatRect* dst_rect) const override;
   FloatSize ElementSize(const FloatSize&) const override;
   bool IsImageBitmap() const override { return true; }
   int SourceWidth() override { return image_ ? image_->width() : 0; }
   int SourceHeight() override { return image_ ? image_->height() : 0; }
   bool IsAccelerated() const override;
 
@@ skipping 30 matching lines @@
               bool is_image_bitmap_premultiplied,
               bool is_image_bitmap_origin_clean);
 
   RefPtr<StaticBitmapImage> image_;
   bool is_neutered_ = false;
 };
 
 }  // namespace blink
 
 #endif  // ImageBitmap_h