cc: Add checker-imaging support to TileManager.

cc/trees/layer_tree_settings.cc

 // Copyright 2011 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/trees/layer_tree_settings.h"
 
 #include "third_party/khronos/GLES2/gl2.h"
 
 namespace cc {
 
@@ skipping 78 matching lines @@
   scheduler_settings.timeout_and_draw_when_animation_checkerboards =
       timeout_and_draw_when_animation_checkerboards;
   scheduler_settings.using_synchronous_renderer_compositor =
       using_synchronous_renderer_compositor;
   scheduler_settings.enable_latency_recovery = enable_latency_recovery;
   scheduler_settings.background_frame_interval =
       base::TimeDelta::FromSecondsD(1.0 / background_animation_rate);
   return scheduler_settings;
 }
 
+TileManagerSettings LayerTreeSettings::ToTileManagerSettings() const {
+  TileManagerSettings tile_manager_settings;
+  tile_manager_settings.use_partial_raster = use_partial_raster;
+  tile_manager_settings.check_tile_priority_inversion =
+      check_tile_priority_inversion;
+  tile_manager_settings.enable_checker_imaging = enable_checker_imaging;
+  return tile_manager_settings;
+}
+
 }  // namespace cc