Revert 245031 "This CL"

ui/compositor/layer_animator.cc

Index: ui/compositor/layer_animator.cc
===================================================================
--- ui/compositor/layer_animator.cc	(revision 245869)
+++ ui/compositor/layer_animator.cc	(working copy)
@@ -55,6 +55,7 @@
 LayerAnimator::LayerAnimator(base::TimeDelta transition_duration)
     : delegate_(NULL),
       preemption_strategy_(IMMEDIATELY_SET_NEW_TARGET),
+      is_transition_duration_locked_(false),
       transition_duration_(transition_duration),
       tween_type_(gfx::Tween::LINEAR),
       is_started_(false),
@@ -118,6 +119,10 @@
 ANIMATED_PROPERTY(float, GRAYSCALE, Grayscale, float, grayscale);
 ANIMATED_PROPERTY(SkColor, COLOR, Color, SkColor, color);
 
+base::TimeDelta LayerAnimator::GetTransitionDuration() const {
+  return transition_duration_;
+}
+
 void LayerAnimator::SetDelegate(LayerAnimationDelegate* delegate) {
   delegate_ = delegate;
 }
@@ -798,8 +803,10 @@
   sequence->OnScheduled();
 }
 
-base::TimeDelta LayerAnimator::GetTransitionDuration() const {
-  return transition_duration_;
+void LayerAnimator::SetTransitionDuration(base::TimeDelta duration) {
+  if (is_transition_duration_locked_)
+    return;
+  transition_duration_ = duration;
 }
 
 void LayerAnimator::ClearAnimationsInternal() {