Moves NewWindowDelegate to ash/common

ash/common/new_window_delegate.h

 // Copyright 2013 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_NEW_WINDOW_DELEGATE_H_
-#define ASH_NEW_WINDOW_DELEGATE_H_
+#ifndef ASH_COMMON_NEW_WINDOW_DELEGATE_H_
+#define ASH_COMMON_NEW_WINDOW_DELEGATE_H_
 
 namespace ash {
 
 // A delegate class to create or open windows that are not a part of
 // ash.
 class NewWindowDelegate {
  public:
   virtual ~NewWindowDelegate() {}
 
   // Invoked when the user uses Ctrl+T to open a new tab.
@@ skipping 19 matching lines @@
 
   // Shows the task manager window.
   virtual void ShowTaskManager() = 0;
 
   // Opens the feedback page for "Report Issue".
   virtual void OpenFeedbackPage() = 0;
 };
 
 }  // namespace ash
 
-#endif  // ASH_NEW_WINDOW_DELEGATE_H_
+#endif  // ASH_COMMON_NEW_WINDOW_DELEGATE_H_