cc: Don't add new tilings while syncing a tiling.

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 5c8df6009a23150ae77ba43f129ad4076227d310..67b267c28036d206cd102d64f3b1038cb602bcbd 100644
--- a/cc/resources/picture_layer_tiling_set.h
+++ b/cc/resources/picture_layer_tiling_set.h
@@ -54,11 +54,6 @@ class CC_EXPORT PictureLayerTilingSet {
   // Remove all tiles; keep all tilings.
   void RemoveAllTiles();
 
-  void UpdateTilePriorities(WhichTree tree,

[alokp, 2014/06/19 19:32:35]

Dana: I did not understand why you had to remove this and copy the
implementation at two places - PictureLayerImpl and
picture_layer_tiling_unittest.cc.

[danakj, 2014/06/19 21:57:21]

All it is now is a for loop, it used to compute a new visible rect so it had
more purpose. Just simpler to call UTP on the tilings directly, I think esp
since there's only one call site.

-                            const gfx::Rect& visible_layer_rect,
-                            float layer_contents_scale,
-                            double current_frame_time_in_seconds);
-
   void DidBecomeActive();
   void DidBecomeRecycled();