Add profile selector menu to app list.

ui/app_list/app_list_menu.h

Index: ui/app_list/app_list_menu.h
diff --git a/ui/app_list/app_list_menu.h b/ui/app_list/app_list_menu.h
index ff4be49e4c59f89d9940ae3ea88ed9f412d76cd9..0af6f287fc68a5c11d716f178aad5e9788133c8f 100644
--- a/ui/app_list/app_list_menu.h
+++ b/ui/app_list/app_list_menu.h
@@ -21,6 +21,9 @@ class AppListMenu : public ui::SimpleMenuModel::Delegate {
     SHOW_SETTINGS,
     SHOW_HELP,
     SHOW_FEEDBACK,
+    // |The received command id| - |SELECT_PROFILE| is the profile index
+    // selected.
+    SELECT_PROFILE,
   };
 
   explicit AppListMenu(AppListViewDelegate* delegate);
@@ -39,6 +42,7 @@ class AppListMenu : public ui::SimpleMenuModel::Delegate {
   virtual void ExecuteCommand(int command_id, int event_flags) OVERRIDE;
 
   ui::SimpleMenuModel menu_model_;
+  ui::SimpleMenuModel profiles_model_;
   AppListViewDelegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListMenu);