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 81 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));
 }
 
 scoped_ptr<TilingSetRasterQueue> PictureLayerImpl::CreateRasterQueue(
     bool prioritize_low_res) {
   if (!tilings_)
     return make_scoped_ptr(new TilingSetRasterQueue());
   return make_scoped_ptr(
       new TilingSetRasterQueue(tilings_.get(), prioritize_low_res));
 }
 
@@ skipping 1199 matching lines @@
 
 bool PictureLayerImpl::AllTilesRequiredForDrawAreReadyToDraw() const {
   if (!layer_tree_impl()->IsActiveTree())
     return true;
 
   return AllTilesRequiredAreReadyToDraw(
       &PictureLayerTiling::IsTileRequiredForDrawIfVisible);
 }
 
 }  // namespace cc