Revert 152059 - Gradient overlay for constrained window

ui/base/animation/linear_animation.cc

Index: ui/base/animation/linear_animation.cc
===================================================================
--- ui/base/animation/linear_animation.cc	(revision 152061)
+++ ui/base/animation/linear_animation.cc	(working copy)
@@ -45,14 +45,6 @@
   return state_;
 }
 
-void LinearAnimation::SetCurrentValue(double new_value) {
-  new_value = std::max(0.0, std::min(1.0, new_value));
-  base::TimeDelta time_delta = base::TimeDelta::FromMicroseconds(
-      duration_.InMicroseconds() * (new_value - state_));
-  SetStartTime(start_time() - time_delta);
-  state_ = new_value;
-}
-
 void LinearAnimation::End() {
   if (!is_animating())
     return;
@@ -87,10 +79,6 @@
     Stop();
 }
 
-void LinearAnimation::AnimationStarted() {
-  state_ = 0.0;
-}
-
 void LinearAnimation::AnimationStopped() {
   if (!in_end_)
     return;