cc: Make rect naming consistent in picture layer tiling.

cc/resources/picture_layer_tiling.h

 // 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.
 
 #ifndef CC_RESOURCES_PICTURE_LAYER_TILING_H_
 #define CC_RESOURCES_PICTURE_LAYER_TILING_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 282 matching lines @@
 
   // Internal data.
   TilingData tiling_data_;
   TileMap tiles_;  // It is not legal to have a NULL tile in the tiles_ map.
   gfx::Rect live_tiles_rect_;
 
   // State saved for computing velocities based upon finite differences.
   double last_impl_frame_time_in_seconds_;
   gfx::Rect last_visible_rect_in_content_space_;
 
-  gfx::Rect current_visible_rect_in_content_space_;
-  gfx::Rect current_skewport_;
+  // Iteration rects in content space
+  gfx::Rect current_visible_rect_;
+  gfx::Rect current_skewport_rect_;
+  gfx::Rect current_soon_border_rect_;
   gfx::Rect current_eventually_rect_;
-  gfx::Rect current_soon_border_rect_;
 
   std::vector<Tile*> eviction_tiles_cache_;
   bool eviction_tiles_cache_valid_;
   TreePriority eviction_cache_tree_priority_;
 
  private:
   DISALLOW_ASSIGN(PictureLayerTiling);
 
   RectExpansionCache expansion_cache_;
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_PICTURE_LAYER_TILING_H_