Fix a leak in wm::AnimateOnChildWindowVisibilityChanged().

ash/wm/window_animations_unittest.cc

Index: ash/wm/window_animations_unittest.cc
diff --git a/ash/wm/window_animations_unittest.cc b/ash/wm/window_animations_unittest.cc
index 0e1a4d8b24d3553cb1b3c08093f60230dc0f8ad9..4bed566020a9aaa744d14fbbf29b59283c290ad8 100644
--- a/ash/wm/window_animations_unittest.cc
+++ b/ash/wm/window_animations_unittest.cc
@@ -95,6 +95,18 @@ TEST_F(WindowAnimationsTest, HideShowBrightnessGrayscaleAnimation) {
   EXPECT_TRUE(window->layer()->visible());
 }
 
+TEST_F(WindowAnimationsTest, HideRotateAnimationNoLeak) {
+  scoped_ptr<aura::Window> window(CreateTestWindowInShellWithId(0));
+  window->Show();
+  ::wm::SetWindowVisibilityAnimationType(
+      window.get(),
+      ::wm::WINDOW_VISIBILITY_ANIMATION_TYPE_ROTATE);
+
+  // Should not leak with LSAN enabled.
+  EXPECT_NO_FATAL_FAILURE(
+      AnimateOnChildWindowVisibilityChanged(window.get(), false));
+}
+
 TEST_F(WindowAnimationsTest, LayerTargetVisibility) {
   scoped_ptr<aura::Window> window(CreateTestWindowInShellWithId(0));