mash: Move most files in //ash/system/tray to //ash/common/system/tray

ash/system/tray/view_click_listener.h

Index: ash/system/tray/view_click_listener.h
diff --git a/ash/system/tray/view_click_listener.h b/ash/system/tray/view_click_listener.h
deleted file mode 100644
index f1cc3d223c998f67e9a6313b8f153891e2849701..0000000000000000000000000000000000000000
--- a/ash/system/tray/view_click_listener.h
+++ /dev/null
@@ -1,24 +0,0 @@
-// 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_SYSTEM_TRAY_VIEW_CLICK_LISTENER_H_
-#define ASH_SYSTEM_TRAY_VIEW_CLICK_LISTENER_H_
-
-namespace views {
-class View;
-}
-
-namespace ash {
-
-class ViewClickListener {
- public:
-  virtual void OnViewClicked(views::View* sender) = 0;
-
- protected:
-  virtual ~ViewClickListener() {}
-};
-
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_TRAY_VIEW_CLICK_LISTENER_H_