cc: Remove usage of ComputeVisibleRects on main thread

cc/layers/layer.cc

Index: cc/layers/layer.cc
diff --git a/cc/layers/layer.cc b/cc/layers/layer.cc
index 6f9239a1940986f39d024f5003f8ac7a8afc1f4d..8881b00ad2611a0e2731aa1203f8a52ede26c8c7 100644
--- a/cc/layers/layer.cc
+++ b/cc/layers/layer.cc
@@ -985,15 +985,6 @@ int Layer::effect_tree_index() const {
   return effect_tree_index_;
 }
 
-int Layer::render_target_effect_tree_index() const {
-  EffectNode* effect_node =
-      layer_tree_host_->property_trees()->effect_tree.Node(effect_tree_index_);
-  if (effect_node->has_render_surface)
-    return effect_node->id;
-  else
-    return effect_node->target_id;
-}
-
 void Layer::SetScrollTreeIndex(int index) {
   DCHECK(IsPropertyChangeAllowed());
   if (scroll_tree_index_ == index)