Test the home card stays bottom after activation change.

athena/screen/screen_manager_impl.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "athena/screen/screen_manager_impl.h"
 
 #include "athena/input/public/accelerator_manager.h"
 #include "athena/screen/modal_window_controller.h"
 #include "athena/screen/screen_accelerator_handler.h"
 #include "athena/util/container_priorities.h"
@@ skipping 94 matching lines @@
           return false;
       }
     }
     return BaseFocusRules::CanActivateWindow(window);
   }
 
   virtual aura::Window* GetNextActivatableWindow(
       aura::Window* ignore) const override {
     aura::Window* next = wm::BaseFocusRules::GetNextActivatableWindow(ignore);
     // TODO(oshima): Search from activatable containers if |next| is NULL.
+    // crbug.com/424750.
     return next;
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AthenaFocusRules);
 };
 
 class AthenaScreenPositionClient : public aura::client::ScreenPositionClient {
  public:
   AthenaScreenPositionClient() {
@@ skipping 270 matching lines @@
 }
 
 // static
 void ScreenManager::Shutdown() {
   DCHECK(instance);
   delete instance;
   DCHECK(!instance);
 }
 
 }  // namespace athena