cc: Rework how picture layer tiling set gets into raster queues.

cc/trees/layer_tree_impl.cc

Index: cc/trees/layer_tree_impl.cc
diff --git a/cc/trees/layer_tree_impl.cc b/cc/trees/layer_tree_impl.cc
index 80ccf14d7ba303bdda932fea2d83e842240bfc25..086be0d85d094e0772d930054a5b1b11c0afbdcd 100644
--- a/cc/trees/layer_tree_impl.cc
+++ b/cc/trees/layer_tree_impl.cc
@@ -1532,14 +1532,6 @@ void LayerTreeImpl::GetViewportSelection(ViewportSelectionBound* start,
   }
 }
 
-void LayerTreeImpl::RegisterPictureLayerImpl(PictureLayerImpl* layer) {
-  layer_tree_host_impl_->RegisterPictureLayerImpl(layer);
-}
-
-void LayerTreeImpl::UnregisterPictureLayerImpl(PictureLayerImpl* layer) {
-  layer_tree_host_impl_->UnregisterPictureLayerImpl(layer);
-}
-
 void LayerTreeImpl::InputScrollAnimationFinished() {
   layer_tree_host_impl_->ScrollEnd();
 }