cc: Add SetChildrenNeedBeginFrames() & SendBeginFramesToChildren()

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 808bf21a767fc772ecc909c88242c3e27f93584f..782259c923d2d5b5e3dd5a6a5b926341561bf699 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -1352,4 +1352,14 @@ 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);
+}
+
 }  // namespace cc