Add Hide to app menu.

chrome/app/chrome_command_ids.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_APP_CHROME_COMMAND_IDS_H_
 #define CHROME_APP_CHROME_COMMAND_IDS_H_
 
 // This file lists all the command IDs understood by e.g. the browser.
 // It is used by Windows RC files, Mac NIB files, and other platforms too.
 
@@ skipping 224 matching lines @@
 #define IDC_TRANSLATE_TARGET_LANGUAGE_BASE          42400
 
 // Speech input
 #define IDC_TOGGLE_SPEECH_INPUT         42500
 
 // Identifiers for platform-specific items.
 // Placed in a common file to help insure they never collide.
 #define IDC_VIEW_MENU                   44000     // OSX only
 #define IDC_FILE_MENU                   44001     // OSX only
 #define IDC_CHROME_MENU                 44002     // OSX only
+#define IDC_HIDE_APP                    44003     // OSX only
 #define IDC_HISTORY_MENU                46000     // OSX only
 #define IDC_PROFILE_MAIN_MENU           46100     // OSX only
 #define IDC_INPUT_METHODS_MENU          46300     // Linux only
 
 // Custom context menu entries
 #define IDC_CONTENT_CONTEXT_CUSTOM_FIRST 47000
 #define IDC_CONTENT_CONTEXT_CUSTOM_LAST  48000
 
 // Context menu items added by extensions.
 #define IDC_EXTENSIONS_CONTEXT_CUSTOM_FIRST 49000
@@ skipping 89 matching lines @@
 
 // Protocol handler menu entries
 #define IDC_CONTENT_CONTEXT_PROTOCOL_HANDLER_FIRST     52000
 #define IDC_CONTENT_CONTEXT_PROTOCOL_HANDLER_LAST      52199
 #define IDC_CONTENT_CONTEXT_PROTOCOL_HANDLER_SETTINGS  52200
 
 // NOTE: The last valid command value is 57343 (0xDFFF)
 // See http://msdn.microsoft.com/en-us/library/t2zechd4(VS.71).aspx
 
 #endif  // CHROME_APP_CHROME_COMMAND_IDS_H_