Read compositor VSync information from platform, when possible

chromeos/display/output_configurator_unittest.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 "chromeos/display/output_configurator.h"
 
 #include <cmath>
 #include <cstdarg>
 #include <map>
 #include <string>
@@ skipping 303 matching lines @@
 class TestStateController : public OutputConfigurator::StateController {
  public:
   TestStateController() : state_(STATE_DUAL_EXTENDED) {}
   virtual ~TestStateController() {}
 
   void set_state(OutputState state) { state_ = state; }
 
   // OutputConfigurator::StateController overrides:
   virtual OutputState GetStateForDisplayIds(
       const std::vector<int64>& outputs) const OVERRIDE { return state_; }
-  virtual bool GetResolutionForDisplayId(
-      int64 display_id,
-      int *width,
-      int *height) const OVERRIDE {
+  virtual bool GetResolutionForDisplayId(int64 display_id,
+                                         int* width,
+                                         int* height,
+                                         float* refresh_rate) const OVERRIDE {
     return false;
   }
 
  private:
   OutputState state_;
 
   DISALLOW_COPY_AND_ASSIGN(TestStateController);
 };
 
 class TestMirroringController
@@ skipping 1101 matching lines @@
                         GetCrtcAction(outputs_[1].crtc, 0,
                             outputs_[1].mode_infos[kFirstMode].height +
                               OutputConfigurator::kVerticalGap, kFirstMode + 3,
                             outputs_[1].output).c_str(),
                         kUngrab, kProjectingOn, NULL),
             delegate_->GetActionsAndClear());
 
 }
 
 }  // namespace chromeos