Animate the OverviewButtonTray

ash/system/web_notification/web_notification_tray_unittest.cc

Index: ash/system/web_notification/web_notification_tray_unittest.cc
diff --git a/ash/system/web_notification/web_notification_tray_unittest.cc b/ash/system/web_notification/web_notification_tray_unittest.cc
index c02a0ae345ac387960c43815cf42c5f1dc65d2bf..c6604e9d61a7b9eb10a4be8afe0144ccf18165fb 100644
--- a/ash/system/web_notification/web_notification_tray_unittest.cc
+++ b/ash/system/web_notification/web_notification_tray_unittest.cc
@@ -14,6 +14,7 @@
 #include "ash/system/status_area_widget.h"
 #include "ash/system/tray/system_tray.h"
 #include "ash/system/tray/system_tray_item.h"
+#include "ash/system/tray/tray_background_view.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/status_area_widget_test_helper.h"
 #include "ash/test/test_system_tray_delegate.h"
@@ -90,6 +91,11 @@ class WebNotificationTrayTest : public test::AshTestBase {
   WebNotificationTrayTest() {}
   virtual ~WebNotificationTrayTest() {}
 
+  virtual void SetUp() OVERRIDE {
+    TrayBackgroundView::DisableAnimationsForTest();
+    test::AshTestBase::SetUp();
+  }
+
   virtual void TearDown() OVERRIDE {
     GetMessageCenter()->RemoveAllNotifications(false);
     test::AshTestBase::TearDown();