Do SetNeedsCommit() instead of Composite() in threaded mode.

ui/compositor/compositor.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/compositor/compositor.h"
 
 #include <algorithm>
 #include <deque>
 
 #include "base/bind.h"
@@ skipping 162 matching lines @@
 
   // Stop all outstanding draws before telling the ContextFactory to tear
   // down any contexts that the |host_| may rely upon.
   host_.reset();
 
   ContextFactory::GetInstance()->RemoveCompositor(this);
 }
 
 void Compositor::ScheduleDraw() {
   if (compositor_thread_loop_) {
-    host_->Composite(gfx::FrameTime::Now());
+    host_->SetNeedsCommit();
   } else if (!defer_draw_scheduling_) {
     defer_draw_scheduling_ = true;
     base::MessageLoop::current()->PostTask(
         FROM_HERE,
         base::Bind(&Compositor::Draw, schedule_draw_factory_.GetWeakPtr()));
   }
 }
 
 void Compositor::SetRootLayer(Layer* root_layer) {
   if (root_layer_ == root_layer)
@@ skipping 208 matching lines @@
     // CompositorObservers to be notified before starting another
     // draw cycle.
     ScheduleDraw();
   }
   FOR_EACH_OBSERVER(CompositorObserver,
                     observer_list_,
                     OnCompositingEnded(this));
 }
 
 }  // namespace ui