gpu: Only estimate parent compositor run time when needed

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index 1bc708d5f39fa80a60c61cbf48ec998a78a49dc7..65c558fe17991ec9697ba12987ae5e3fd8aadcaf 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -2023,7 +2023,8 @@ bool LayerTreeHostImpl::InitializeRenderer(
 
   // TODO(brianderson): Don't use a hard-coded parent draw time.
   base::TimeDelta parent_draw_time =
-      output_surface_->capabilities().adjust_deadline_for_parent
+      (!settings_.begin_frame_scheduling_enabled &&
+       output_surface_->capabilities().adjust_deadline_for_parent)
           ? BeginFrameArgs::DefaultEstimatedParentDrawTime()
           : base::TimeDelta();
   client_->SetEstimatedParentDrawTime(parent_draw_time);