cc: Implement geometry-based tile eviction

cc/layers/picture_layer_impl.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/layers/picture_layer_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <set>
 
@@ skipping 84 matching lines @@
 PictureLayerImpl::~PictureLayerImpl() {
   if (twin_layer_)
     twin_layer_->twin_layer_ = nullptr;
   layer_tree_impl()->UnregisterPictureLayerImpl(this);
 }
 
 scoped_ptr<TilingSetEvictionQueue> PictureLayerImpl::CreateEvictionQueue(
     TreePriority tree_priority) {
   if (!tilings_)
     return make_scoped_ptr(new TilingSetEvictionQueue());
-  return make_scoped_ptr(
-      new TilingSetEvictionQueue(tilings_.get(), tree_priority));
+  bool skip_shared_out_of_order_tiles =
+      GetPendingOrActiveTwinLayer() != nullptr;
+  return make_scoped_ptr(new TilingSetEvictionQueue(
+      tilings_.get(), tree_priority, skip_shared_out_of_order_tiles));
 }
 
 const char* PictureLayerImpl::LayerTypeAsString() const {
   return "cc::PictureLayerImpl";
 }
 
 scoped_ptr<LayerImpl> PictureLayerImpl::CreateLayerImpl(
     LayerTreeImpl* tree_impl) {
   return PictureLayerImpl::Create(tree_impl, id());
 }
@@ skipping 1360 matching lines @@
     IteratorType index = stages_[current_stage_].iterator_type;
     TilePriority::PriorityBin tile_type = stages_[current_stage_].tile_type;
 
     if (iterators_[index] && iterators_[index].get_type() == tile_type)
       break;
     ++current_stage_;
   }
 }
 
 }  // namespace cc