Hide fullscreen rotation jank

cc/trees/single_thread_proxy.cc

Index: cc/trees/single_thread_proxy.cc
diff --git a/cc/trees/single_thread_proxy.cc b/cc/trees/single_thread_proxy.cc
index 1769c19fe60d303b082519dcf7c9103d3ad8ea25..306f51e1aa738887e49a7957265a85f1764a98f2 100644
--- a/cc/trees/single_thread_proxy.cc
+++ b/cc/trees/single_thread_proxy.cc
@@ -113,6 +113,14 @@ void SingleThreadProxy::SetVisible(bool visible) {
     scheduler_on_impl_thread_->SetVisible(layer_tree_host_impl_->visible());
 }
 
+void SingleThreadProxy::SetIsFullscreen(bool is_fullscreen) {
+  TRACE_EVENT1("cc", "SingleThreadProxy::SetIsFullscreen", "is_fullscreen",
+               is_fullscreen);
+  DebugScopedSetImplThread impl(task_runner_provider_);
+
+  layer_tree_host_impl_->SetIsFullscreen(is_fullscreen);
+}
+
 void SingleThreadProxy::RequestNewCompositorFrameSink() {
   DCHECK(task_runner_provider_->IsMainThread());
   compositor_frame_sink_creation_callback_.Cancel();