cc: Refactor how picture layers are exposed to the tile manager.

cc/trees/layer_tree_impl.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_impl.h"
 
 #include <limits>
 #include <set>
 
 #include "base/debug/trace_event.h"
@@ skipping 1257 matching lines @@
 
 LayerImpl* LayerTreeImpl::FindLayerThatIsHitByPointInTouchHandlerRegion(
     const gfx::PointF& screen_space_point) {
   FindTouchEventLayerFunctor func = {screen_space_point};
   FindClosestMatchingLayerDataForRecursion data_for_recursion;
   FindClosestMatchingLayer(
       screen_space_point, root_layer(), func, &data_for_recursion);
   return data_for_recursion.closest_match;
 }
 
+void LayerTreeImpl::RegisterPictureLayerImpl(PictureLayerImpl* layer) {
+  layer_tree_host_impl_->RegisterPictureLayerImpl(layer);
+}
+
+void LayerTreeImpl::UnregisterPictureLayerImpl(PictureLayerImpl* layer) {
+  layer_tree_host_impl_->UnregisterPictureLayerImpl(layer);
+}
+
 }  // namespace cc