CC::Animations should use TimeTicks & TimeDelta to represent time

cc/layers/layer.cc

Index: cc/layers/layer.cc
diff --git a/cc/layers/layer.cc b/cc/layers/layer.cc
index befedf77dac8c9eafcf02f5c57235d6676818cc3..943f508c3ead9385281dcfee79eed4fa339d1461 100644
--- a/cc/layers/layer.cc
+++ b/cc/layers/layer.cc
@@ -10,6 +10,7 @@
 #include "base/location.h"
 #include "base/metrics/histogram.h"
 #include "base/single_thread_task_runner.h"
+#include "base/time/time.h"
 #include "cc/animation/animation.h"
 #include "cc/animation/animation_events.h"
 #include "cc/animation/keyframed_animation_curve.h"
@@ -1112,7 +1113,8 @@ bool Layer::AddAnimation(scoped_ptr <Animation> animation) {
 }
 
 void Layer::PauseAnimation(int animation_id, double time_offset) {
-  layer_animation_controller_->PauseAnimation(animation_id, time_offset);
+  layer_animation_controller_->PauseAnimation(
+      animation_id, base::TimeDelta::FromSecondsD(time_offset));
   SetNeedsCommit();
 }