cc: Start using raster/eviction iterators.

cc/resources/picture_layer_tiling_set.h

Index: cc/resources/picture_layer_tiling_set.h
diff --git a/cc/resources/picture_layer_tiling_set.h b/cc/resources/picture_layer_tiling_set.h
index e945752665913a851ddb7c18065f564e35a74ed8..68c76ebbfb8fd42378c636e704d1830e31c541e1 100644
--- a/cc/resources/picture_layer_tiling_set.h
+++ b/cc/resources/picture_layer_tiling_set.h
@@ -53,7 +53,6 @@ class CC_EXPORT PictureLayerTilingSet {
   void RemoveAllTiles();
 
   void DidBecomeActive();
-  void DidBecomeRecycled();
 
   // For a given rect, iterates through tiles that can fill it.  If no
   // set of tiles with resources can fill the rect, then it will iterate
@@ -75,6 +74,8 @@ class CC_EXPORT PictureLayerTilingSet {
     gfx::RectF texture_rect() const;
     // Texture size in texels
     gfx::Size texture_size() const;
+    // Tile resolution.
+    TileResolution resolution();
 
     Tile* operator->() const;
     Tile* operator*() const;