cc: Use refresh_rate from LayerTreeSettings

cc/trees/thread_proxy.cc

 // Copyright 2011 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 "cc/trees/thread_proxy.h"
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "cc/base/thread.h"
@@ skipping 1038 matching lines @@
   else if (result == LayerTreeHost::RecreateSucceeded)
     output_surface_recreation_callback_.Cancel();
 }
 
 void ThreadProxy::InitializeImplOnImplThread(CompletionEvent* completion,
                                              InputHandler* handler) {
   TRACE_EVENT0("cc", "ThreadProxy::InitializeImplOnImplThread");
   DCHECK(IsImplThread());
   layer_tree_host_impl_ = layer_tree_host_->CreateLayerTreeHostImpl(this);
   const base::TimeDelta display_refresh_interval =
-      base::TimeDelta::FromMicroseconds(base::Time::kMicrosecondsPerSecond /
-                                        60);
+      base::TimeDelta::FromMicroseconds(
+          base::Time::kMicrosecondsPerSecond /
+          layer_tree_host_->settings().refresh_rate);
   scoped_ptr<FrameRateController> frame_rate_controller;
   if (render_vsync_enabled_) {
     if (render_vsync_notification_enabled_) {
       frame_rate_controller.reset(
           new FrameRateController(VSyncTimeSource::Create(this)));
     } else {
       frame_rate_controller.reset(
           new FrameRateController(DelayBasedTimeSource::Create(
               display_refresh_interval, Proxy::ImplThread())));
     }
@@ skipping 242 matching lines @@
       base::Bind(&ThreadProxy::StartScrollbarAnimationOnImplThread,
                  impl_thread_weak_ptr_),
       delay);
 }
 
 void ThreadProxy::StartScrollbarAnimationOnImplThread() {
   layer_tree_host_impl_->StartScrollbarAnimation(base::TimeTicks::Now());
 }
 
 }  // namespace cc