Make cc::animation::TrimTimeToCurrentIteration,cc::AnimationCurve::Duration use TimeTicks/TimeDelta

ui/compositor/float_animation_curve_adapter.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/float_animation_curve_adapter.h"
 
 namespace ui {
 
 FloatAnimationCurveAdapter::FloatAnimationCurveAdapter(
     gfx::Tween::Type tween_type,
     float initial_value,
     float target_value,
     base::TimeDelta duration)
     : tween_type_(tween_type),
       initial_value_(initial_value),
       target_value_(target_value),
       duration_(duration) {
 }
 
-double FloatAnimationCurveAdapter::Duration() const {
-  return duration_.InSecondsF();
+base::TimeDelta FloatAnimationCurveAdapter::Duration() const {
+  return duration_;
 }
 
 scoped_ptr<cc::AnimationCurve> FloatAnimationCurveAdapter::Clone() const {
   return make_scoped_ptr(new FloatAnimationCurveAdapter(
       tween_type_, initial_value_, target_value_, duration_));
 }
 
 float FloatAnimationCurveAdapter::GetValue(double t) const {
   if (t >= duration_.InSecondsF())
     return target_value_;
   if (t <= 0.0)
     return initial_value_;
   double progress = t / duration_.InSecondsF();
   return gfx::Tween::FloatValueBetween(
       gfx::Tween::CalculateValue(tween_type_, progress),
       initial_value_,
       target_value_);
 }
 
 }  // namespace ui