Raster PictureLayerTiling with fractional translation

cc/raster/bitmap_raster_buffer_provider.cc

 // 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.
 
 #include "cc/raster/bitmap_raster_buffer_provider.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 23 matching lines @@
             resource_content_id && resource_content_id == previous_content_id) {
   }
 
   // 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 gfx::Vector2dF& translation,
       const RasterSource::PlaybackSettings& playback_settings) override {
     TRACE_EVENT0("cc", "BitmapRasterBuffer::Playback");
     gfx::Rect playback_rect = raster_full_rect;
     if (resource_has_previous_content_) {
       playback_rect.Intersect(raster_dirty_rect);
     }
     DCHECK(!playback_rect.IsEmpty())
         << "Why are we rastering a tile that's not dirty?";
 
     size_t stride = 0u;
     RasterBufferProvider::PlaybackToMemory(
         lock_.sk_bitmap().getPixels(), resource_->format(), resource_->size(),
         stride, raster_source, raster_full_rect, playback_rect, scale,
-        playback_settings);
+        translation, playback_settings);
   }
 
  private:
   ResourceProvider::ScopedWriteLockSoftware lock_;
   const Resource* resource_;
   bool resource_has_previous_content_;
 
   DISALLOW_COPY_AND_ASSIGN(RasterBufferImpl);
 };
 
@@ skipping 40 matching lines @@
   return ResourceFormatRequiresSwizzle(GetResourceFormat(must_support_alpha));
 }
 
 bool BitmapRasterBufferProvider::CanPartialRasterIntoProvidedResource() const {
   return true;
 }
 
 void BitmapRasterBufferProvider::Shutdown() {}
 
 }  // namespace cc