Add flag in about:flags page to enable / disable apps-devtool.

chrome/common/chrome_switches.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.
 
 // Defines all the command-line switches used by Chrome.
 
 #ifndef CHROME_COMMON_CHROME_SWITCHES_H_
 #define CHROME_COMMON_CHROME_SWITCHES_H_
 
 #include "build/build_config.h"
@@ skipping 17 matching lines @@
 extern const char kAllowFileAccess[];
 extern const char kAllowHTTPBackgroundPage[];
 extern const char kAllowLegacyExtensionManifests[];
 extern const char kAllowNaClSocketAPI[];
 extern const char kAllowOutdatedPlugins[];
 extern const char kAllowRunningInsecureContent[];
 extern const char kAllowScriptingGallery[];
 extern const char kAlwaysAuthorizePlugins[];
 extern const char kAppId[];
 extern const char kApp[];
-extern const char kAppsDebugger[];
+extern const char kAppsDevtool[];
 extern const char kAppWindowSize[];
 extern const char kAppNotifyChannelServerURL[];
 extern const char kAppsCheckoutURL[];
 extern const char kAppsGalleryDownloadURL[];
 extern const char kAppsGalleryInstallAutoConfirmForTests[];
 extern const char kAppsGalleryURL[];
 extern const char kAppsGalleryUpdateURL[];
 extern const char kAppsNewInstallBubble[];
 extern const char kAppsNoThrob[];
 extern const char kAuthNegotiateDelegateWhitelist[];
@@ skipping 422 matching lines @@
 #else
 extern const char kEnablePrintPreview[];
 #endif
 
 // DON'T ADD RANDOM STUFF HERE. Put it in the main section above in
 // alphabetical order, or in one of the ifdefs (also in order in each section).
 
 }  // namespace switches
 
 #endif  // CHROME_COMMON_CHROME_SWITCHES_H_