cc: Added tile bundles

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 194 matching lines @@
     return NULL;
   return *tiling_iter_;
 }
 
 Tile* PictureLayerTilingSet::CoverageIterator::operator*() const {
   if (!tiling_iter_)
     return NULL;
   return *tiling_iter_;
 }
 
+TilePriority PictureLayerTilingSet::CoverageIterator::priority() {
+  if (!tiling_iter_)
+    return TilePriority();
+  return tiling_iter_.priority();
+}
+
 PictureLayerTiling* PictureLayerTilingSet::CoverageIterator::CurrentTiling() {
   if (current_tiling_ < 0)
     return NULL;
   if (static_cast<size_t>(current_tiling_) >= set_->tilings_.size())
     return NULL;
   return set_->tilings_[current_tiling_];
 }
 
 int PictureLayerTilingSet::CoverageIterator::NextTiling() const {
   // Order returned by this method is:
@@ skipping 131 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