cc: Remove invalidated recycle tree tiles on activation.

cc/resources/picture_layer_tiling_set.cc

 // Copyright 2012 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/resources/picture_layer_tiling_set.h"
 
 #include <limits>
 
 namespace cc {
 
@@ skipping 18 matching lines @@
 
 PictureLayerTilingSet::~PictureLayerTilingSet() {
 }
 
 void PictureLayerTilingSet::SetClient(PictureLayerTilingClient* client) {
   client_ = client;
   for (size_t i = 0; i < tilings_.size(); ++i)
     tilings_[i]->SetClient(client_);
 }
 
+void PictureLayerTilingSet::RemoveTilesInRegion(const Region& region) {
+  for (size_t i = 0; i < tilings_.size(); ++i)
+    tilings_[i]->RemoveTilesInRegion(region);
+}
+
 bool PictureLayerTilingSet::SyncTilings(const PictureLayerTilingSet& other,
                                         const gfx::Size& new_layer_bounds,
                                         const Region& layer_invalidation,
                                         float minimum_contents_scale) {
   if (new_layer_bounds.IsEmpty()) {
     RemoveAllTilings();
     layer_bounds_ = new_layer_bounds;
     return false;
   }
 
@@ skipping 271 matching lines @@
 }
 
 size_t PictureLayerTilingSet::GPUMemoryUsageInBytes() const {
   size_t amount = 0;
   for (size_t i = 0; i < tilings_.size(); ++i)
     amount += tilings_[i]->GPUMemoryUsageInBytes();
   return amount;
 }
 
 }  // namespace cc