[Eraser] First pass at removing the notification center panel.

ui/message_center/fake_message_center_tray_delegate.h

 // 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.
 
 #ifndef UI_MESSAGE_CENTER_FAKE_MESSAGE_CENTER_TRAY_DELEGATE_H_
 #define UI_MESSAGE_CENTER_FAKE_MESSAGE_CENTER_TRAY_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/message_center/message_center_tray_delegate.h"
 
 namespace message_center {
 
 class MessageCenter;
 class MessageCenterTray;
 
 // A message center tray delegate which does nothing.
 class FakeMessageCenterTrayDelegate : public MessageCenterTrayDelegate {
  public:
-  FakeMessageCenterTrayDelegate(MessageCenter* message_center,
-                                base::Closure quit_closure);
+  explicit FakeMessageCenterTrayDelegate(MessageCenter* message_center);
   ~FakeMessageCenterTrayDelegate() override;
 
-  bool displayed_first_run_balloon() const {
-    return displayed_first_run_balloon_;
-  }
-
   // Overridden from MessageCenterTrayDelegate:
   void OnMessageCenterTrayChanged() override;
   bool ShowPopups() override;
   void HidePopups() override;
   bool ShowMessageCenter() override;
   void HideMessageCenter() override;
   bool ShowNotifierSettings() override;
   bool IsContextMenuEnabled() const override;
   MessageCenterTray* GetMessageCenterTray() override;
-  void DisplayFirstRunBalloon() override;
 
  private:
   scoped_ptr<MessageCenterTray> tray_;
   base::Closure quit_closure_;
   bool displayed_first_run_balloon_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeMessageCenterTrayDelegate);
 };
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_FAKE_MESSAGE_CENTER_TRAY_DELEGATE_H_