Enable profile switching for standalone App Launcher via the Settings App.

chrome/browser/ui/startup/startup_browser_creator.h

Index: chrome/browser/ui/startup/startup_browser_creator.h
diff --git a/chrome/browser/ui/startup/startup_browser_creator.h b/chrome/browser/ui/startup/startup_browser_creator.h
index b8f9ef677c87abc884942feaeff6166e3f500575..d290bc9e4a9599cb4b171ccf55fa68b6a6338313 100644
--- a/chrome/browser/ui/startup/startup_browser_creator.h
+++ b/chrome/browser/ui/startup/startup_browser_creator.h
@@ -49,8 +49,10 @@ class StartupBrowserCreator {
   // This function performs command-line handling and is invoked only after
   // start up (for example when we get a start request for another process).
   // |command_line| holds the command line we need to process

[tapted, 2013/01/21 00:37:02]

nit: while you're here - comment is missing a period. But perhaps add a
description of cur_dir (also: should this be 'user_data_dir'?), and
startup_profile_dir.

[koz (OOO until 15th September), 2013/01/21 23:23:15]

Done.

-  static void ProcessCommandLineAlreadyRunning(const CommandLine& cmd_line,
-                                               const FilePath& cur_dir);
+  static void ProcessCommandLineAlreadyRunning(
+      const CommandLine& cmd_line,

[tapted, 2013/01/21 00:37:02]

nit: while you're here.. 'cmd_line' got abbreviated some time in the past and,
additionally, doesn't match the function comment. Should be command_line.

[koz (OOO until 15th September), 2013/01/21 23:23:15]

Done.

+      const FilePath& cur_dir,
+      const FilePath& startup_profile_dir);
 
   template <class AutomationProviderClass>
   static bool CreateAutomationProvider(const std::string& channel_id,