cc: Move raster_source from Tile to PrioritizedTile

cc/debug/rasterize_and_record_benchmark_impl.cc

 // 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.
 
 #include "cc/debug/rasterize_and_record_benchmark_impl.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 159 matching lines @@
   // really matter.
   const LayerTreeSettings& settings = layer->layer_tree_impl()->settings();
   scoped_ptr<PictureLayerTilingSet> tiling_set = PictureLayerTilingSet::Create(
       layer->GetTree(), &client, settings.max_tiles_for_interest_area,
       settings.skewport_target_time_in_seconds,
       settings.skewport_extrapolation_limit_in_content_pixels);
 
   PictureLayerTiling* tiling = tiling_set->AddTiling(layer->contents_scale_x(),
                                                      layer->GetRasterSource());
   tiling->CreateAllTilesForTesting();
+  RasterSource* raster_source = tiling->raster_source();
   for (PictureLayerTiling::CoverageIterator it(
            tiling, layer->contents_scale_x(), layer->visible_content_rect());
        it;
        ++it) {
     DCHECK(*it);
 
-    RasterSource* raster_source = (*it)->raster_source();
     gfx::Rect content_rect = (*it)->content_rect();
     float contents_scale = (*it)->contents_scale();
 
     base::TimeDelta min_time;
     bool is_solid_color = false;
     RunBenchmark(raster_source, content_rect, contents_scale,
                  rasterize_repeat_count_, &min_time, &is_solid_color);
 
     int tile_size = content_rect.width() * content_rect.height();
     if (layer->contents_opaque())
@@ skipping 18 matching lines @@
       total_memory_usage(0),
       total_layers(0),
       total_picture_layers(0),
       total_picture_layers_with_no_content(0),
       total_picture_layers_off_screen(0) {
 }
 
 RasterizeAndRecordBenchmarkImpl::RasterizeResults::~RasterizeResults() {}
 
 }  // namespace cc