Unified BeginFrame scheduling

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 515d42bdbea6e2d112127ea9cb2109f515481823..ed7f347de825e60dbfab3175371c8258ee9e55a6 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -439,6 +439,8 @@ void LayerTreeHost::DidLoseOutputSurface() {
   if (output_surface_lost_)
     return;
 
+  client_->DidLoseOutputSurface();
+
   num_failed_recreate_attempts_ = 0;
   output_surface_lost_ = true;
   SetNeedsCommit();
@@ -1307,4 +1309,16 @@ void LayerTreeHost::BreakSwapPromises(SwapPromise::DidNotSwapReason reason) {
   swap_promise_list_.clear();
 }
 
+void LayerTreeHost::SetAuthoritativeVSyncInterval(base::TimeDelta interval) {
+  proxy_->SetAuthoritativeVSyncInterval(interval);
+}
+
+void LayerTreeHost::SetChildrenNeedBeginFrames(bool need_begin_frame) {
+  proxy_->SetChildrenNeedBeginFrames(need_begin_frame);
+}
+
+void LayerTreeHost::SendBeginFrameToChildren(const BeginFrameArgs& args) {
+  client_->SendBeginFrameToChildren(args);
+}
+
 }  // namespace cc