cc: Apply contents scales to impl-side painting rasterization

cc/picture_layer_impl.cc

 // Copyright 2012 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/picture_layer_impl.h"
 
 #include "base/time.h"
 #include "cc/append_quads_data.h"
 #include "cc/checkerboard_draw_quad.h"
 #include "cc/debug_border_draw_quad.h"
@@ skipping 142 matching lines @@
                                 time_delta);
 
   last_screen_space_transform_ = current_screen_space_transform;
   last_update_time_ = current_time;
   last_bounds_ = bounds();
   last_content_bounds_ = contentBounds();
   last_content_scale_x_ = contentsScaleX();
   last_content_scale_y_ = contentsScaleY();
 }
 
-scoped_refptr<Tile> PictureLayerImpl::CreateTile(PictureLayerTiling*,
+scoped_refptr<Tile> PictureLayerImpl::CreateTile(PictureLayerTiling* tiling,
                                                  gfx::Rect rect) {
   TileManager* tile_manager = layerTreeHostImpl()->tileManager();
 
   return make_scoped_refptr(new Tile(
       tile_manager,
       pile_.get(),
       rect.size(),
       GL_RGBA,
-      rect));
+      rect,
+      tiling->contents_scale()));
 }
 
 void PictureLayerImpl::SyncFromActiveLayer(const PictureLayerImpl* other) {
   tilings_.CloneFrom(other->tilings_);
 }
 
 }  // namespace cc