gfx: Add FrameTime and DisplayTime classes

ui/gfx/animation/animation.cc

 // Copyright (c) 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 "ui/gfx/animation/animation.h"
 
 #include "ui/gfx/animation/animation_container.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/gfx/animation/tween.h"
 #include "ui/gfx/rect.h"
@@ skipping 96 matching lines @@
   }
   return !::GetSystemMetrics(SM_REMOTESESSION);
 #endif
   return true;
 }
 
 bool Animation::ShouldSendCanceledFromStop() {
   return false;
 }
 
-void Animation::SetStartTime(base::TimeTicks start_time) {
+void Animation::SetStartTime(gfx::FrameTime start_time) {
   start_time_ = start_time;
 }
 
 base::TimeDelta Animation::GetTimerInterval() const {
   return timer_interval_;
 }
 
 }  // namespace gfx