Let --js-flags work when Harmony is enabled in about:flags

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 197 matching lines @@
 extern const char kHostRules[];
 extern const char kHostResolverParallelism[];
 extern const char kHostResolverRetryAttempts[];
 extern const char kIgnoreUrlFetcherCertRequests[];
 extern const char kIncognito[];
 extern const char kInstallChromeApp[];
 extern const char kInstallFromWebstore[];
 extern const char kInstantProcess[];
 extern const char kInvalidationUseGCMChannel[];
 extern const char kIpcFuzzerTestcase[];
+extern const char kJavaScriptHarmony[];
 extern const char kKeepAliveForTest[];
 extern const char kKioskMode[];
 extern const char kKioskModePrinting[];
 extern const char kLimitedInstallFromWebstore[];
 extern const char kLoadComponentExtension[];
 extern const char kLoadExtension[];
 extern const char kMakeDefaultBrowser[];
 extern const char kManualEnhancedBookmarks[];
 extern const char kManualEnhancedBookmarksOptout[];
 extern const char kMediaCacheSize[];
@@ skipping 165 matching lines @@
 
 bool AboutInSettingsEnabled();
 bool SettingsWindowEnabled();
 
 // 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_