gfx: Add FrameTime and DisplayTime classes

ui/gfx/animation/multi_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/multi_animation.h"
 
 #include "base/logging.h"
 #include "ui/gfx/animation/animation_delegate.h"
 
 namespace gfx {
@@ skipping 25 matching lines @@
 
 // static.
 base::TimeDelta MultiAnimation::GetDefaultTimerInterval() {
   return base::TimeDelta::FromMilliseconds(kDefaultTimerInterval);
 }
 
 double MultiAnimation::GetCurrentValue() const {
   return current_value_;
 }
 
-void MultiAnimation::Step(base::TimeTicks time_now) {
+void MultiAnimation::Step(gfx::FrameTime time_now) {
   double last_value = current_value_;
   size_t last_index = current_part_index_;
 
   int delta = static_cast<int>((time_now - start_time()).InMilliseconds());
   if (delta >= cycle_time_ms_ && !continuous_) {
     current_part_index_ = parts_.size() - 1;
     current_value_ = Tween::CalculateValue(parts_[current_part_index_].type, 1);
     Stop();
     return;
   }
   delta %= cycle_time_ms_;
   const Part& part = GetPart(&delta, &current_part_index_);
   double percent = static_cast<double>(delta + part.start_time_ms) /
         static_cast<double>(part.end_time_ms);
   DCHECK(percent <= 1);
   current_value_ = Tween::CalculateValue(part.type, percent);
 
   if ((current_value_ != last_value || current_part_index_ != last_index) &&
       delegate()) {
     delegate()->AnimationProgressed(this);
   }
 }
 
-void MultiAnimation::SetStartTime(base::TimeTicks start_time) {
+void MultiAnimation::SetStartTime(gfx::FrameTime start_time) {
   Animation::SetStartTime(start_time);
   current_value_ = 0;
   current_part_index_ = 0;
 }
 
 const MultiAnimation::Part& MultiAnimation::GetPart(int* time_ms,
                                                     size_t* part_index) {
   DCHECK(*time_ms < cycle_time_ms_);
 
   for (size_t i = 0; i < parts_.size(); ++i) {
     if (*time_ms < parts_[i].time_ms) {
       *part_index = i;
       return parts_[i];
     }
 
     *time_ms -= parts_[i].time_ms;
   }
   NOTREACHED();
   *time_ms = 0;
   *part_index = 0;
   return parts_[0];
 }
 
 }  // namespace gfx