Revert of cc: Remove tilings from recycle tree when active tree removes them.

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 ee936022a04c17f507b8968a84c7ca39dbfcd65b..392e80b658b041d71e09d53b63a164c90917945e 100644
--- a/cc/trees/layer_tree_impl.cc
+++ b/cc/trees/layer_tree_impl.cc
@@ -718,13 +718,6 @@
   return tree->LayerById(id);
 }
 
-LayerImpl* LayerTreeImpl::FindRecycleTreeLayerById(int id) {
-  LayerTreeImpl* tree = layer_tree_host_impl_->recycle_tree();
-  if (!tree)
-    return NULL;
-  return tree->LayerById(id);
-}
-
 int LayerTreeImpl::MaxTextureSize() const {
   return layer_tree_host_impl_->GetRendererCapabilities().max_texture_size;
 }