reland -- Disable animations during aura tests.

ash/wm/system_modal_container_layout_manager_unittest.cc

Index: ash/wm/system_modal_container_layout_manager_unittest.cc
diff --git a/ash/wm/system_modal_container_layout_manager_unittest.cc b/ash/wm/system_modal_container_layout_manager_unittest.cc
index 04198ea84a4799a9afeb211d7faa72f5544eed40..e3be65dcfa95abf5b5dc554cd00f02aec516ad8c 100644
--- a/ash/wm/system_modal_container_layout_manager_unittest.cc
+++ b/ash/wm/system_modal_container_layout_manager_unittest.cc
@@ -168,10 +168,8 @@ TEST_F(SystemModalContainerLayoutManagerTest, ModalTransient) {
 
 // Tests that we can activate an unrelated window after a modal window is closed
 // for a window.
-// TODO(beng): This test is disabled pending a solution re: visibility & target
-//             visibility.
 TEST_F(SystemModalContainerLayoutManagerTest,
-       DISABLED_CanActivateAfterEndModalSession) {
+       CanActivateAfterEndModalSession) {
   scoped_ptr<aura::Window> unrelated(TestWindow::OpenTestWindow(NULL, false));
   unrelated->SetBounds(gfx::Rect(100, 100, 50, 50));
   scoped_ptr<aura::Window> parent(TestWindow::OpenTestWindow(NULL, false));
@@ -191,6 +189,8 @@ TEST_F(SystemModalContainerLayoutManagerTest,
   // Now close the transient.
   transient.reset();
 
+  MessageLoopForUI::current()->RunAllPending();
+
   // parent should now be active again.
   EXPECT_TRUE(IsActiveWindow(parent.get()));