Remove stops_event_propagation from Window, since it's broken.

ash/wm/window_cycle_controller_unittest.cc

Index: ash/wm/window_cycle_controller_unittest.cc
===================================================================
--- ash/wm/window_cycle_controller_unittest.cc	(revision 127786)
+++ ash/wm/window_cycle_controller_unittest.cc	(working copy)
@@ -132,21 +132,15 @@
   EXPECT_FALSE(controller->IsCycling());
   EXPECT_TRUE(wm::IsActiveWindow(window0.get()));
 
-  // When a screen lock window is visible, cycling window does not take effect.
-  aura::Window* lock_screen_container =
-      Shell::GetInstance()->GetContainer(
-          internal::kShellWindowId_LockScreenContainer);
-  scoped_ptr<Window> lock_screen_window(
-      CreateTestWindowWithId(-1, lock_screen_container));
-  lock_screen_window->Show();
+  // When the screen is locked, cycling window does not take effect.
+  Shell::GetInstance()->delegate()->LockScreen();
   EXPECT_TRUE(wm::IsActiveWindow(window0.get()));
   controller->HandleCycleWindow(WindowCycleController::FORWARD, false);
   EXPECT_TRUE(wm::IsActiveWindow(window0.get()));
   controller->HandleCycleWindow(WindowCycleController::BACKWARD, false);
   EXPECT_TRUE(wm::IsActiveWindow(window0.get()));
 
-  // Hiding the lock screen is equivalent to not being locked.
-  lock_screen_window->Hide();
+  Shell::GetInstance()->delegate()->UnlockScreen();
   EXPECT_TRUE(wm::IsActiveWindow(window0.get()));
   controller->HandleCycleWindow(WindowCycleController::FORWARD, false);
   EXPECT_TRUE(wm::IsActiveWindow(window1.get()));