Stops animations when removing a window from its parent

ui/aura/window.cc

Index: ui/aura/window.cc
diff --git a/ui/aura/window.cc b/ui/aura/window.cc
index 1b7ed4be09e14b4f7d35a9e26672592c3c9b16c1..43f5976403ca0cc0227b2de0bcac372b3c0aef78 100644
--- a/ui/aura/window.cc
+++ b/ui/aura/window.cc
@@ -30,7 +30,6 @@
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/layer.h"
 #include "ui/events/event_target_iterator.h"
-#include "ui/gfx/animation/multi_animation.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/path.h"
 #include "ui/gfx/scoped_canvas.h"
@@ -1016,6 +1015,8 @@ Window* Window::GetWindowForPoint(const gfx::Point& local_point,
 }
 
 void Window::RemoveChildImpl(Window* child, Window* new_parent) {
+  if (child->layer() && child->layer()->GetAnimator())

[sky, 2014/04/24 16:06:19]

Add a comment as to why we do this.

[varkha, 2014/04/24 18:47:18]

Done.

+    child->layer()->GetAnimator()->StopAnimating();
   if (layout_manager_)
     layout_manager_->OnWillRemoveWindowFromLayout(child);
   FOR_EACH_OBSERVER(WindowObserver, observers_, OnWillRemoveWindow(child));