Adds the option of aligning the launcher to the left or right. There

ash/launcher/launcher_context_menu.cc

 // Copyright (c) 2012 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.
 
 #include "ash/launcher/launcher_context_menu.h"
 
 #include "ash/shell.h"
+#include "ash/wm/shelf_auto_hide_behavior.h"
 #include "grit/ash_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace ash {
 
 LauncherContextMenu::LauncherContextMenu() : ui::SimpleMenuModel(NULL) {
   set_delegate(this);
   AddCheckItemWithStringId(MENU_AUTO_HIDE, GetAutoHideResourceStringId());
+  AddSubMenuWithStringId(MENU_ALIGNMENT_MENU,
+                         IDS_AURA_LAUNCHER_CONTEXT_MENU_POSITION,
+                         &alignment_menu_);
 }
 
 LauncherContextMenu::~LauncherContextMenu() {
 }
 
 // static
 bool LauncherContextMenu::IsAutoHideMenuHideChecked() {
   ash::Shell* shell = ash::Shell::GetInstance();
   ash::ShelfAutoHideBehavior auto_hide_behavior =
       shell->GetShelfAutoHideBehavior();
@@ skipping 46 matching lines @@
       ui::Accelerator* accelerator) {
   return false;
 }
 
 void LauncherContextMenu::ExecuteCommand(int command_id) {
   switch (static_cast<MenuItem>(command_id)) {
     case MENU_AUTO_HIDE:
       ash::Shell::GetInstance()->SetShelfAutoHideBehavior(
           GetToggledAutoHideBehavior());
       break;
+    case MENU_ALIGNMENT_MENU:
+      break;
   }
 }
 
 }  // namespace ash