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 7f0232d3d306a9c9ca51ab198c5b37b61db66561..34030d7c61fd9196f36213383ab0bd40f034814c 100644
--- a/cc/scheduler/scheduler.cc
+++ b/cc/scheduler/scheduler.cc
@@ -651,6 +651,14 @@ 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.