cc: Split tiling set raster queues into all and required.

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 088477b09a991572ed21abe1a09a2df22e6fc9ee..7cae98cbab8e2403c5ce31dc08904d21eeac9a9a 100644
--- a/cc/layers/picture_layer_impl.h
+++ b/cc/layers/picture_layer_impl.h
@@ -16,7 +16,6 @@
 #include "cc/resources/picture_layer_tiling_set.h"
 #include "cc/resources/picture_pile_impl.h"
 #include "cc/resources/tiling_set_eviction_queue.h"
-#include "cc/resources/tiling_set_raster_queue.h"
 #include "skia/ext/refptr.h"
 #include "third_party/skia/include/core/SkPicture.h"
 
@@ -50,7 +49,6 @@ class CC_EXPORT PictureLayerImpl
 
   scoped_ptr<TilingSetEvictionQueue> CreateEvictionQueue(
       TreePriority tree_priority);
-  scoped_ptr<TilingSetRasterQueue> CreateRasterQueue(bool prioritize_low_res);
 
   // LayerImpl overrides.
   const char* LayerTypeAsString() const override;
@@ -95,6 +93,8 @@ class CC_EXPORT PictureLayerImpl
 
   bool CanHaveTilings() const;
 
+  PictureLayerTilingSet* picture_layer_tiling_set() { return tilings_.get(); }
+
   // Functions used by tile manager.
   PictureLayerImpl* GetPendingOrActiveTwinLayer() const;
   bool IsOnActiveOrPendingTree() const;