cc: Control defer_commits logic by Scheduler

cc/scheduler/scheduler.cc

Index: cc/scheduler/scheduler.cc
diff --git a/cc/scheduler/scheduler.cc b/cc/scheduler/scheduler.cc
index b92b8a515b705c4a55ef5cb13a5e5479c03ec3d7..43812e8b8471fad22b827a0c2ce4acca8813e20e 100644
--- a/cc/scheduler/scheduler.cc
+++ b/cc/scheduler/scheduler.cc
@@ -671,6 +671,14 @@ void Scheduler::DrawAndSwapIfPossible() {
   state_machine_.DidDrawIfPossibleCompleted(result);
 }
 
+void Scheduler::SetDeferCommits(bool defer_commits) {
+  TRACE_EVENT1("cc", "Scheduler::SetDeferCommits",
+                "defer_commits",
+                defer_commits);
+  state_machine_.SetDeferCommits(defer_commits);
+  ProcessScheduledActions();
+}
+
 void Scheduler::ProcessScheduledActions() {
   // We do not allow ProcessScheduledActions to be recursive.
   // The top-level call will iteratively execute the next action for us anyway.