Cache viewport rect for tile priority in UpdateTiles

cc/test/fake_picture_layer_impl.h

 // Copyright 2013 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.
 
 #ifndef CC_TEST_FAKE_PICTURE_LAYER_IMPL_H_
 #define CC_TEST_FAKE_PICTURE_LAYER_IMPL_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/layers/picture_layer_impl.h"
 
@@ skipping 59 matching lines @@
 
   size_t CountTilesRequired(
       TileRequirementCheck is_tile_required_callback) const;
   size_t CountTilesRequiredForActivation() const;
   size_t CountTilesRequiredForDraw() const;
 
   using PictureLayerImpl::AddTiling;
   using PictureLayerImpl::CleanUpTilingsOnActiveLayer;
   using PictureLayerImpl::CanHaveTilings;
   using PictureLayerImpl::MinimumContentsScale;
-  using PictureLayerImpl::GetViewportForTilePriorityInContentSpace;
+  using PictureLayerImpl::viewport_rect_for_tile_priority_in_content_space;
   using PictureLayerImpl::SanityCheckTilingState;
   using PictureLayerImpl::GetRecycledTwinLayer;
   using PictureLayerImpl::UpdateRasterSource;
 
   using PictureLayerImpl::UpdateIdealScales;
   using PictureLayerImpl::MaximumTilingContentsScale;
 
   float raster_page_scale() const { return raster_page_scale_; }
   void set_raster_page_scale(float scale) { raster_page_scale_ = scale; }
 
@@ skipping 54 matching lines @@
   size_t append_quads_count_;
   size_t did_become_active_call_count_;
   bool has_valid_tile_priorities_;
   bool use_set_valid_tile_priorities_flag_;
   size_t release_resources_count_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_PICTURE_LAYER_IMPL_H_