[ash] Add TYPE_DIALOG and its item's LauncherContextMenu

ash/shelf/shelf_window_watcher.cc

 // Copyright 2013 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/shelf/shelf_window_watcher.h"
 
 #include "ash/display/display_controller.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shelf/shelf_item_delegate_manager.h"
 #include "ash/shelf/shelf_model.h"
@@ skipping 73 matching lines @@
 
 void ShelfWindowWatcher::AddLauncherItem(aura::Window* window) {
   const LauncherItemDetails* item_details =
       GetLauncherItemDetailsForWindow(window);
   LauncherItem item;
   LauncherID id = model_->next_id();
   item.status = ash::wm::IsActiveWindow(window) ? STATUS_ACTIVE: STATUS_RUNNING;
   SetShelfItemDetailsForLauncherItem(&item, *item_details);
   SetLauncherIDForWindow(id, window);
   scoped_ptr<ShelfItemDelegate> item_delegate(
-      new ShelfWindowWatcherItemDelegate(window));
+      new ShelfWindowWatcherItemDelegate(window, model_));
   // |item_delegate| is owned by |item_delegate_manager_|.
   item_delegate_manager_->SetShelfItemDelegate(id, item_delegate.Pass());
   model_->Add(item);
 }
 
 void ShelfWindowWatcher::RemoveLauncherItem(aura::Window* window) {
   model_->RemoveItemAt(model_->ItemIndexByID(GetLauncherIDForWindow(window)));
   SetLauncherIDForWindow(kInvalidShelfID, window);
 }
 
@@ skipping 111 matching lines @@
 
 void ShelfWindowWatcher::OnDisplayRemoved(const gfx::Display& old_display) {
   // When this is called, RootWindow of |old_display| is already removed.
   // Instead, we remove an observer from RootWindow and ActivationClient in the
   // OnRootWindowDestroyed().
   // Do nothing here.
 }
 
 }  // namespace internal
 }  // namespace ash