(Reland) cc: Remove recycled tilings when active tree removes them.

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 700 matching lines @@
   return tree->LayerById(id);
 }
 
 LayerImpl* LayerTreeImpl::FindPendingTreeLayerById(int id) {
   LayerTreeImpl* tree = layer_tree_host_impl_->pending_tree();
   if (!tree)
     return NULL;
   return tree->LayerById(id);
 }
 
+LayerImpl* LayerTreeImpl::FindRecycleTreeLayerById(int id) {
+  LayerTreeImpl* tree = layer_tree_host_impl_->recycle_tree();
+  if (!tree)
+    return NULL;
+  return tree->LayerById(id);
+}
+
 int LayerTreeImpl::MaxTextureSize() const {
   return layer_tree_host_impl_->GetRendererCapabilities().max_texture_size;
 }
 
 bool LayerTreeImpl::PinchGestureActive() const {
   return layer_tree_host_impl_->pinch_gesture_active();
 }
 
 base::TimeTicks LayerTreeImpl::CurrentFrameTimeTicks() const {
   return layer_tree_host_impl_->CurrentFrameTimeTicks();
@@ skipping 644 matching lines @@
 
 void LayerTreeImpl::UnregisterPictureLayerImpl(PictureLayerImpl* layer) {
   layer_tree_host_impl_->UnregisterPictureLayerImpl(layer);
 }
 
 void LayerTreeImpl::InputScrollAnimationFinished() {
   layer_tree_host_impl_->ScrollEnd();
 }
 
 }  // namespace cc