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

cc/animation/scroll_offset_animation_curve.cc

Index: cc/animation/scroll_offset_animation_curve.cc
diff --git a/cc/animation/scroll_offset_animation_curve.cc b/cc/animation/scroll_offset_animation_curve.cc
index 641c9e0186db232bdbfee2e30368ace17f50b91d..e0b1a3b5e5c2f2da58642865d1c0854662efdd75 100644
--- a/cc/animation/scroll_offset_animation_curve.cc
+++ b/cc/animation/scroll_offset_animation_curve.cc
@@ -83,8 +83,8 @@ gfx::ScrollOffset ScrollOffsetAnimationCurve::GetValue(double t) const {
           progress, initial_value_.y(), target_value_.y()));
 }
 
-double ScrollOffsetAnimationCurve::Duration() const {
-  return total_animation_duration_.InSecondsF();
+base::TimeDelta ScrollOffsetAnimationCurve::Duration() const {
+  return total_animation_duration_;
 }
 
 AnimationCurve::CurveType ScrollOffsetAnimationCurve::Type() const {