cc: Remove max tiles and skewport constants from tiling client.

cc/layers/picture_layer_impl.h

Index: cc/layers/picture_layer_impl.h
diff --git a/cc/layers/picture_layer_impl.h b/cc/layers/picture_layer_impl.h
index ddf928b621ed1d31bc818ef26d585655f97344cd..ac64dc51163f2708b2e6c8bd30dd38e7539070ce 100644
--- a/cc/layers/picture_layer_impl.h
+++ b/cc/layers/picture_layer_impl.h
@@ -73,9 +73,6 @@ class CC_EXPORT PictureLayerImpl
   PictureLayerTiling* GetRecycledTwinTiling(
       const PictureLayerTiling* tiling) override;
   TilePriority::PriorityBin GetMaxTilePriorityBin() const override;
-  size_t GetMaxTilesForInterestArea() const override;
-  float GetSkewportTargetTimeInSeconds() const override;
-  int GetSkewportExtrapolationLimitInContentPixels() const override;
   WhichTree GetTree() const override;
   bool RequiresHighResToDraw() const override;
 
@@ -146,6 +143,7 @@ class CC_EXPORT PictureLayerImpl
 
   virtual void UpdateIdealScales();
   float MaximumTilingContentsScale() const;
+  scoped_ptr<PictureLayerTilingSet> CreatePictureLayerTilingSet();
 
   PictureLayerImpl* twin_layer_;