Delete "shutdown without closing browsers" path

ash/test/test_shell_delegate.h

 // Copyright (c) 2012 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.
 
 #ifndef ASH_TEST_TEST_SHELL_DELEGATE_H_
 #define ASH_TEST_TEST_SHELL_DELEGATE_H_
 
 #include <string>
 
 #include "ash/shell_delegate.h"
@@ skipping 17 matching lines @@
   void set_multi_profiles_enabled(bool multi_profiles_enabled) {
     multi_profiles_enabled_ = multi_profiles_enabled;
   }
 
   // Overridden from ShellDelegate:
   virtual bool IsFirstRunAfterBoot() const OVERRIDE;
   virtual bool IsIncognitoAllowed() const OVERRIDE;
   virtual bool IsMultiProfilesEnabled() const OVERRIDE;
   virtual bool IsRunningInForcedAppMode() const OVERRIDE;
   virtual void PreInit() OVERRIDE;
-  virtual void Shutdown() OVERRIDE;
+  virtual void PreShutdown() OVERRIDE;
   virtual void Exit() OVERRIDE;
   virtual keyboard::KeyboardControllerProxy*
       CreateKeyboardControllerProxy() OVERRIDE;
   virtual content::BrowserContext* GetActiveBrowserContext() OVERRIDE;
   virtual app_list::AppListViewDelegate* CreateAppListViewDelegate() OVERRIDE;
   virtual ShelfDelegate* CreateShelfDelegate(ShelfModel* model) OVERRIDE;
   virtual SystemTrayDelegate* CreateSystemTrayDelegate() OVERRIDE;
   virtual UserWallpaperDelegate* CreateUserWallpaperDelegate() OVERRIDE;
   virtual SessionStateDelegate* CreateSessionStateDelegate() OVERRIDE;
   virtual AccessibilityDelegate* CreateAccessibilityDelegate() OVERRIDE;
@@ skipping 19 matching lines @@
 
   TestSessionStateDelegate* test_session_state_delegate_;  // Not owned.
 
   DISALLOW_COPY_AND_ASSIGN(TestShellDelegate);
 };
 
 }  // namespace test
 }  // namespace ash
 
 #endif  // ASH_TEST_TEST_SHELL_DELEGATE_H_