Add a command line "--profile-directory="name of profile directory to load"" switch

chrome/common/chrome_switches.h

 // Copyright (c) 2011 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_
 #pragma once
 
@@ skipping 210 matching lines @@
 extern const char kPpapiFlashInProcess[];
 extern const char kPreloadInstantSearch[];
 extern const char kPrerender[];
 extern const char kPrerenderFromOmnibox[];
 extern const char kPrerenderSwitchValueAuto[];
 extern const char kPrerenderSwitchValueDisabled[];
 extern const char kPrerenderSwitchValueEnabled[];
 extern const char kPrerenderSwitchValuePrefetchOnly[];
 extern const char kPrint[];
 extern const char kProductVersion[];
+extern const char kProfileDirectory[];
 extern const char kProfilingAtStart[];
 extern const char kProfilingFile[];
 extern const char kProfilingFlush[];
 extern const char kProxyAutoDetect[];
 extern const char kProxyBypassList[];
 extern const char kProxyPacUrl[];
 extern const char kProxyServer[];
 extern const char kPurgeMemoryButton[];
 extern const char kReloadKilledTabs[];
 extern const char kRemoteDebuggingPort[];
@@ skipping 126 matching lines @@
 bool IsPrintPreviewEnabled();
 
 bool IsInBrowserThumbnailingEnabled();
 
 // 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_