Fix focus loss on partial lock.

ui/compositor/layer_animator.h

Index: ui/compositor/layer_animator.h
diff --git a/ui/compositor/layer_animator.h b/ui/compositor/layer_animator.h
index 6c24008cb0d7698e1cb2ecca9d43bd3de14a8244..c834d587af7bf2d51831fa562576ce3dedd5d219 100644
--- a/ui/compositor/layer_animator.h
+++ b/ui/compositor/layer_animator.h
@@ -8,6 +8,7 @@
 #include <deque>
 #include <vector>
 
+#include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/ref_counted.h"
@@ -130,6 +131,14 @@ class COMPOSITOR_EXPORT LayerAnimator
       LayerAnimationElement::AnimatableProperty property,
       ...);
 
+  // Schedules a pause with zero length of all the specified properties.
+  // End the list with -1. If animation is not cancelled, |callback| will be
+  // called.
+  void SetCompletionCallbackForProperties(
+      base::Closure& callback,
+      LayerAnimationElement::AnimatableProperty property,
+      ...);
+
   // Returns true if there is an animation in the queue (animations remain in
   // the queue until they complete, so this includes running animations).
   bool is_animating() const { return !animation_queue_.empty(); }