Partial raster for GPU

cc/raster/bitmap_raster_buffer_provider.h

 // Copyright 2014 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 CC_RASTER_BITMAP_RASTER_BUFFER_PROVIDER_H_
 #define CC_RASTER_BITMAP_RASTER_BUFFER_PROVIDER_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
@@ skipping 18 matching lines @@
 
   // Overridden from RasterBufferProvider:
   std::unique_ptr<RasterBuffer> AcquireBufferForRaster(
       const Resource* resource,
       uint64_t resource_content_id,
       uint64_t previous_content_id) override;
   void ReleaseBufferForRaster(std::unique_ptr<RasterBuffer> buffer) override;
   void OrderingBarrier() override;
   ResourceFormat GetResourceFormat(bool must_support_alpha) const override;
   bool IsResourceSwizzleRequired(bool must_support_alpha) const override;
-  bool IsPartialRasterSupported() const override;
+  bool CanPartialRasterIntoProvidedResource() const override;
   void Shutdown() override;
 
  protected:
   explicit BitmapRasterBufferProvider(ResourceProvider* resource_provider);
 
  private:
   std::unique_ptr<base::trace_event::ConvertableToTraceFormat> StateAsValue()
       const;
 
   ResourceProvider* resource_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(BitmapRasterBufferProvider);
 };
 
 }  // namespace cc
 
 #endif  // CC_RASTER_BITMAP_RASTER_BUFFER_PROVIDER_H_