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

chrome/browser/ui/startup/startup_browser_creator.cc

Index: chrome/browser/ui/startup/startup_browser_creator.cc
diff --git a/chrome/browser/ui/startup/startup_browser_creator.cc b/chrome/browser/ui/startup/startup_browser_creator.cc
index 712f980cc9af817df92fc667d1dba7a5d575eb2f..a119fa86eeaaf5e18a4e186cd28cb1fa370ce4eb 100644
--- a/chrome/browser/ui/startup/startup_browser_creator.cc
+++ b/chrome/browser/ui/startup/startup_browser_creator.cc
@@ -585,24 +585,19 @@ void StartupBrowserCreator::ProcessCommandLineOnProfileCreated(
 // static
 void StartupBrowserCreator::ProcessCommandLineAlreadyRunning(
     const CommandLine& cmd_line,
-    const FilePath& cur_dir) {
-  if (cmd_line.HasSwitch(switches::kProfileDirectory)) {
-    ProfileManager* profile_manager = g_browser_process->profile_manager();
-    FilePath path = cmd_line.GetSwitchValuePath(switches::kProfileDirectory);
-    path = profile_manager->user_data_dir().Append(path);
-    profile_manager->CreateProfileAsync(path,
+    const FilePath& cur_dir,
+    const FilePath& profile_path) {
+  ProfileManager* profile_manager = g_browser_process->profile_manager();
+  Profile* profile = profile_manager->GetProfileByPath(profile_path);
+
+  // The profile isn't loaded yet and so needs to be loaded asynchronously.
+  if (!profile) {
+    profile_manager->CreateProfileAsync(profile_path,
         base::Bind(&StartupBrowserCreator::ProcessCommandLineOnProfileCreated,
                    cmd_line, cur_dir), string16(), string16(), false);
     return;
   }
 
-  Profile* profile = ProfileManager::GetLastUsedProfile();
-  if (!profile) {
-    // We should only be able to get here if the profile already exists and
-    // has been created.
-    NOTREACHED();
-    return;
-  }
   ProcessCmdLineImpl(cmd_line, cur_dir, false, profile, Profiles(), NULL, NULL);
 }