Fixes crash introduced @ 153047 (you can hit crash by maximizing a

ash/wm/window_animations.cc

Index: ash/wm/window_animations.cc
diff --git a/ash/wm/window_animations.cc b/ash/wm/window_animations.cc
index 6f1bca355de533afdf3b98259225c53ec14420f3..0b4a24a4075447d3f59af6a73c7255574af41b6b 100644
--- a/ash/wm/window_animations.cc
+++ b/ash/wm/window_animations.cc
@@ -49,7 +49,6 @@ namespace internal {
 namespace {
 const float kWindowAnimation_Vertical_TranslateY = 15.f;
 
-bool delayed_old_layer_deletion_in_cross_fade_for_test_ = false;
 }
 
 DEFINE_WINDOW_PROPERTY_KEY(WindowVisibilityAnimationType,
@@ -663,13 +662,7 @@ class CrossFadeObserver : public ui::CompositorObserver,
 
   // ui::ImplicitAnimationObserver overrides:
   virtual void OnImplicitAnimationsCompleted() OVERRIDE {
-    // ImplicitAnimationObserver's base class uses the object after
-    // calling this function, so we cannot delete |this|. The |layer_|
-    // may be gone by the next message loop run when shutting down, so
-    // clean them up now.
-    if (!delayed_old_layer_deletion_in_cross_fade_for_test_)
-      Cleanup();
-    MessageLoop::current()->DeleteSoon(FROM_HERE, this);
+    delete this;
   }
 
  private:
@@ -850,9 +843,5 @@ bool AnimateOnChildWindowVisibilityChanged(aura::Window* window, bool visible) {
   }
 }
 
-void SetDelayedOldLayerDeletionInCrossFadeForTest(bool value) {
-  delayed_old_layer_deletion_in_cross_fade_for_test_ = value;
-}
-
 }  // namespace internal
 }  // namespace ash