Remove SendBeginFramesToChildren plumbing

cc/trees/layer_tree_host.cc

Index: cc/trees/layer_tree_host.cc
diff --git a/cc/trees/layer_tree_host.cc b/cc/trees/layer_tree_host.cc
index 47691bf9e2b47ae6f6ba51f0a1f1679f3a334710..f91f925117114483385ac1118a0ab3c353f44ecb 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -1276,16 +1276,6 @@ SurfaceSequence LayerTreeHost::CreateSurfaceSequence() {
   return SurfaceSequence(surface_id_namespace_, next_surface_sequence_++);
 }
 
-void LayerTreeHost::SetChildrenNeedBeginFrames(
-    bool children_need_begin_frames) const {
-  proxy_->SetChildrenNeedBeginFrames(children_need_begin_frames);
-}
-
-void LayerTreeHost::SendBeginFramesToChildren(
-    const BeginFrameArgs& args) const {
-  client_->SendBeginFramesToChildren(args);
-}
-
 void LayerTreeHost::SetAuthoritativeVSyncInterval(
     const base::TimeDelta& interval) {
   proxy_->SetAuthoritativeVSyncInterval(interval);