Remove JS dialog dependency from content.

chrome/browser/ui/app_modal_dialogs/app_modal_dialog.cc

 // Copyright (c) 2011 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 "chrome/browser/ui/app_modal_dialogs/app_modal_dialog.h"
 
 #include "chrome/browser/ui/app_modal_dialogs/app_modal_dialog_queue.h"
 #include "chrome/browser/ui/app_modal_dialogs/native_app_modal_dialog.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/common/notification_service.h"
 #include "content/common/notification_type.h"
 
 AppModalDialog::AppModalDialog(TabContents* tab_contents,
-                               const std::wstring& title)
+                               const string16& title)
     : skip_this_dialog_(false),
       tab_contents_(tab_contents),
       native_dialog_(NULL),
       title_(title) {
 }
 
 AppModalDialog::~AppModalDialog() {
 }
 
 void AppModalDialog::ShowModalDialog() {
@@ skipping 27 matching lines @@
 }
 
 void AppModalDialog::CloseModalDialog() {
   DCHECK(native_dialog_);
   native_dialog_->CloseAppModalDialog();
 }
 
 void AppModalDialog::CompleteDialog() {
   AppModalDialogQueue::GetInstance()->ShowNextDialog();
 }