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

chrome/browser/ui/webui/options/manage_profile_handler.h

Index: chrome/browser/ui/webui/options/manage_profile_handler.h
diff --git a/chrome/browser/ui/webui/options/manage_profile_handler.h b/chrome/browser/ui/webui/options/manage_profile_handler.h
index 0149b5700377f778b4a1652bedf256da75ba9296..e38b89507adbdb365f10ae439229fafaf7cb54da 100644
--- a/chrome/browser/ui/webui/options/manage_profile_handler.h
+++ b/chrome/browser/ui/webui/options/manage_profile_handler.h
@@ -74,6 +74,11 @@ class ManageProfileHandler : public OptionsPageUIHandler {
   // |args| is of the form: [ {string} profileFilePath ]
   void DeleteProfile(const base::ListValue* args);
 
+  // Callback for the "profilesAppListSwitch" message. Asks the
+  // app_list_controller to change the profile registered for the AppList.
+  // |args| is of the form: [ {string} profileFilePath ]
+  void ProfilesAppListSwitch(const base::ListValue* args);
+
   // Callback for the 'profileIconSelectionChanged' message. Used to update the
   // name in the manager profile dialog based on the selected icon.
   void ProfileIconSelectionChanged(const base::ListValue* args);