cc: Abstract the LayerTreeHost.

cc/layers/picture_image_layer.cc

 // Copyright 2010 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/layers/picture_image_layer.h"
 
 #include <stddef.h>
 
 #include "cc/layers/picture_layer_impl.h"
 #include "cc/playback/display_item_list_settings.h"
@@ skipping 46 matching lines @@
 
 scoped_refptr<DisplayItemList> PictureImageLayer::PaintContentsToDisplayList(
     ContentLayerClient::PaintingControlSetting painting_control) {
   DCHECK(image_);
   DCHECK_GT(image_->width(), 0);
   DCHECK_GT(image_->height(), 0);
   DCHECK(layer_tree_host());
 
   DisplayItemListSettings settings;
   settings.use_cached_picture =
-      layer_tree_host()->settings().use_cached_picture_raster;
+      layer_tree_host()->GetSettings().use_cached_picture_raster;
   scoped_refptr<DisplayItemList> display_list =
       DisplayItemList::Create(settings);
 
   SkPictureRecorder recorder;
   SkCanvas* canvas =
       recorder.beginRecording(gfx::RectToSkRect(PaintableRegion()));
 
   SkScalar content_to_layer_scale_x =
       SkFloatToScalar(static_cast<float>(bounds().width()) / image_->width());
   SkScalar content_to_layer_scale_y =
@@ skipping 14 matching lines @@
 
 bool PictureImageLayer::FillsBoundsCompletely() const {
   return false;
 }
 
 size_t PictureImageLayer::GetApproximateUnsharedMemoryUsage() const {
   return 0;
 }
 
 }  // namespace cc