Suppressed screen rotation notifications triggeres by the accelerometer

ash/system/chromeos/tray_display.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_SYSTEM_CHROMEOS_TRAY_DISPLAY_H_
 #define ASH_SYSTEM_CHROMEOS_TRAY_DISPLAY_H_
 
 #include <map>
 
 #include "ash/ash_export.h"
 #include "ash/display/display_controller.h"
 #include "ash/display/display_info.h"
 #include "ash/system/tray/system_tray_item.h"
 #include "base/strings/string16.h"
 #include "ui/views/view.h"
 
 namespace ash {
 class DisplayView;
 
 namespace test {
 class AshTestBase;
 }
 
 class ASH_EXPORT TrayDisplay : public SystemTrayItem,
                                public DisplayController::Observer {
  public:
+  // Identifier for all message center notifications.

[sadrul, 2014/05/09 15:25:16]

Why would the identifer for message-center notifications live in here?

+  static const char kNotificationId[];
+
   explicit TrayDisplay(SystemTray* system_tray);
   virtual ~TrayDisplay();
 
   // Overridden from DisplayControllerObserver:
   virtual void OnDisplayConfigurationChanged() OVERRIDE;
 
  private:
   friend class TrayDisplayTest;
 
   typedef std::map<int64, DisplayInfo> DisplayInfoMap;
 
-  static const char kNotificationId[];
-
   // Scans the current display info and updates |display_info_|. Sets the
   // previous data to |old_info| if it's not NULL.
   void UpdateDisplayInfo(DisplayInfoMap* old_info);
 
   // Compares the current display settings with |old_info| and determine what
   // message should be shown for notification. Returns true if there's a
   // meaningful change. Note that it's possible to return true and set
   // |message_out| to empty, which means the notification should be removed. It
   // also sets |additional_message_out| which appears in the notification with
   // the |message_out|.
@@ skipping 19 matching lines @@
 
   DisplayView* default_;
   DisplayInfoMap display_info_;
 
   DISALLOW_COPY_AND_ASSIGN(TrayDisplay);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_CHROMEOS_TRAY_DISPLAY_H_