Move NotificationDelegate into message_center.

ui/message_center/notification_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 CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_DELEGATE_H_
-#define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_DELEGATE_H_
+#ifndef UI_MESSAGE_CENTER_NOTIFICATION_DELEGATE_H_
+#define UI_MESSAGE_CENTER_NOTIFICATION_DELEGATE_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
+#include "ui/message_center/message_center_export.h"
 
 namespace content {
 class RenderViewHost;
 }
 
+namespace message_center {
+
 // Delegate for a notification. This class has two roles: to implement callback
 // methods for notification, and to provide an identity of the associated
 // notification.
-class NotificationDelegate
+class MESSAGE_CENTER_EXPORT NotificationDelegate
     : public base::RefCountedThreadSafe<NotificationDelegate> {
  public:
   // To be called when the desktop notification is actually shown.
   virtual void Display() = 0;
 
   // To be called when the desktop notification cannot be shown due to an
   // error.
   virtual void Error() = 0;
 
   // To be called when the desktop notification is closed.  If closed by a
   // user explicitly (as opposed to timeout/script), |by_user| should be true.
   virtual void Close(bool by_user) = 0;
 
   // To be called when a desktop notification is clicked.
   virtual void Click() = 0;
 
   // To be called when the user clicks a button in a notification. TODO(miket):
   // consider providing default implementations of the pure virtuals of this
   // interface, to avoid pinging so many OWNERs each time we enhance it.
   virtual void ButtonClick(int button_index);
 
-  // Returns unique id of the notification.
-  virtual std::string id() const = 0;
-
-  // Returns the id of renderer process which creates the notification, or -1.
-  virtual int process_id() const;
-
-  // Returns the RenderViewHost that generated the notification, or NULL.
-  virtual content::RenderViewHost* GetRenderViewHost() const = 0;
-
-  // Lets the delegate know that no more rendering will be necessary.
-  virtual void ReleaseRenderViewHost();
-
  protected:
   virtual ~NotificationDelegate() {}
 
  private:
   friend class base::RefCountedThreadSafe<NotificationDelegate>;
 };
 
-#endif  // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_DELEGATE_H_
+}  //  namespace message_center
+
+#endif  // UI_MESSAGE_CENTER_NOTIFICATION_DELEGATE_H_