Raster PictureLayerTiling with fractional translation

cc/raster/gpu_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_GPU_RASTER_BUFFER_PROVIDER_H_
 #define CC_RASTER_GPU_RASTER_BUFFER_PROVIDER_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
@@ skipping 33 matching lines @@
   void Shutdown() override;
 
   void PlaybackOnWorkerThread(
       ResourceProvider::ScopedWriteLockGL* resource_lock,
       const gpu::SyncToken& sync_token,
       bool resource_has_previous_content,
       const RasterSource* raster_source,
       const gfx::Rect& raster_full_rect,
       const gfx::Rect& raster_dirty_rect,
       uint64_t new_content_id,
-      float scale,
+      const ScaleTranslate2d& transform,
       const RasterSource::PlaybackSettings& playback_settings);
 
  private:
   class RasterBufferImpl : public RasterBuffer {
    public:
     RasterBufferImpl(GpuRasterBufferProvider* client,
                      ResourceProvider* resource_provider,
                      ResourceId resource_id,
                      bool async_worker_context_enabled,
                      bool resource_has_previous_content);
     ~RasterBufferImpl() override;
 
     // Overridden from RasterBuffer:
     void Playback(
         const RasterSource* raster_source,
         const gfx::Rect& raster_full_rect,
         const gfx::Rect& raster_dirty_rect,
         uint64_t new_content_id,
-        float scale,
+        const ScaleTranslate2d& transform,
         const RasterSource::PlaybackSettings& playback_settings) override;
 
     void set_sync_token(const gpu::SyncToken& sync_token) {
       sync_token_ = sync_token;
     }
 
    private:
     GpuRasterBufferProvider* const client_;
     ResourceProvider::ScopedWriteLockGL lock_;
     const bool resource_has_previous_content_;
@@ skipping 12 matching lines @@
   const bool async_worker_context_enabled_;
 
   std::set<RasterBufferImpl*> pending_raster_buffers_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuRasterBufferProvider);
 };
 
 }  // namespace cc
 
 #endif  // CC_RASTER_GPU_RASTER_BUFFER_PROVIDER_H_