cc: Remove tiles from recycle tree that were deleted on active.

cc/trees/layer_tree_host_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_host_impl.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 1150 matching lines @@
     active_tree_->DetachLayerTree();
   active_tree_ = LayerTreeImpl::create(this);
   if (pending_tree_)
     pending_tree_->DetachLayerTree();
   pending_tree_.reset();
   if (recycle_tree_)
     recycle_tree_->DetachLayerTree();
   recycle_tree_.reset();
 }
 
+void LayerTreeHostImpl::ResetRecycleTreeForTesting() {
+  if (recycle_tree_)
+    recycle_tree_->DetachLayerTree();
+  recycle_tree_.reset();
+}
+
 void LayerTreeHostImpl::EnforceManagedMemoryPolicy(
     const ManagedMemoryPolicy& policy) {
 
   bool evicted_resources = client_->ReduceContentsTextureMemoryOnImplThread(
       visible_ ? policy.bytes_limit_when_visible : 0,
       ManagedMemoryPolicy::PriorityCutoffToValue(
           visible_ ? policy.priority_cutoff_when_visible
                    : gpu::MemoryAllocation::CUTOFF_ALLOW_NOTHING));
   if (evicted_resources) {
     active_tree_->SetContentsTexturesPurged();
@@ skipping 2167 matching lines @@
 }
 
 void LayerTreeHostImpl::UnregisterPictureLayerImpl(PictureLayerImpl* layer) {
   std::vector<PictureLayerImpl*>::iterator it =
       std::find(picture_layers_.begin(), picture_layers_.end(), layer);
   DCHECK(it != picture_layers_.end());
   picture_layers_.erase(it);
 }
 
 }  // namespace cc