cc: Split animating and drawing into separate actions

cc/scheduler/scheduler.cc

Index: cc/scheduler/scheduler.cc
diff --git a/cc/scheduler/scheduler.cc b/cc/scheduler/scheduler.cc
index df7f166fd11e831edf504855773a38670e6f6b0d..24174558970876d0d94443393f5ee54c92926499 100644
--- a/cc/scheduler/scheduler.cc
+++ b/cc/scheduler/scheduler.cc
@@ -174,6 +174,11 @@ void Scheduler::SetNeedsRedraw() {
   ProcessScheduledActions();
 }
 
+void Scheduler::SetNeedsAnimate() {
+  state_machine_.SetNeedsAnimate();
+  ProcessScheduledActions();
+}
+
 void Scheduler::SetNeedsManageTiles() {
   DCHECK(!IsInsideAction(SchedulerStateMachine::ACTION_MANAGE_TILES));
   state_machine_.SetNeedsManageTiles();
@@ -630,6 +635,9 @@ void Scheduler::ProcessScheduledActions() {
     switch (action) {
       case SchedulerStateMachine::ACTION_NONE:
         break;
+      case SchedulerStateMachine::ACTION_ANIMATE:
+        client_->ScheduledActionAnimate();
+        break;
       case SchedulerStateMachine::ACTION_SEND_BEGIN_MAIN_FRAME:
         client_->ScheduledActionSendBeginMainFrame();
         break;