Remove JS dialog dependency from content.

chrome/browser/ui/app_modal_dialogs/app_modal_dialog.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_APP_MODAL_DIALOGS_APP_MODAL_DIALOG_H_
 #define CHROME_BROWSER_UI_APP_MODAL_DIALOGS_APP_MODAL_DIALOG_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/string16.h"
 #include "build/build_config.h"
 
 class NativeAppModalDialog;
 class TabContents;
 
 // A controller+model base class for modal dialogs.
 class AppModalDialog {
  public:
   // A union of data necessary to determine the type of message box to
   // show. |tab_contents| parameter is optional, if provided that tab will be
   // activated before the modal dialog is displayed.
-  AppModalDialog(TabContents* tab_contents, const std::wstring& title);
+  AppModalDialog(TabContents* tab_contents, const string16& title);
   virtual ~AppModalDialog();
 
   // Called by the AppModalDialogQueue to show this dialog.
   void ShowModalDialog();
 
   // Called by the AppModalDialogQueue to activate the dialog.
   void ActivateModalDialog();
 
   // Closes the dialog if it is showing.
   void CloseModalDialog();
 
   // Completes dialog handling, shows next modal dialog from the queue.
   // TODO(beng): Get rid of this method.
   void CompleteDialog();
 
   // Dialog window title.
-  std::wstring title() const { return title_; }
+  string16 title() const { return title_; }
 
   NativeAppModalDialog* native_dialog() const { return native_dialog_; }
 
   // Methods overridable by AppModalDialog subclasses:
 
   // Creates an implementation of NativeAppModalDialog and shows it.
   // When the native dialog is closed, the implementation of
   // NativeAppModalDialog should call OnAccept or OnCancel to notify the
   // renderer of the user's action. The NativeAppModalDialog is also
   // expected to delete the AppModalDialog associated with it.
@@ skipping 18 matching lines @@
   bool skip_this_dialog_;
 
   // Parent tab contents.
   TabContents* tab_contents_;
 
   // The toolkit-specific implementation of the app modal dialog box.
   NativeAppModalDialog* native_dialog_;
 
  private:
   // Information about the message box is held in the following variables.
-  std::wstring title_;
+  string16 title_;
 
   DISALLOW_COPY_AND_ASSIGN(AppModalDialog);
 };
 
 #endif  // CHROME_BROWSER_UI_APP_MODAL_DIALOGS_APP_MODAL_DIALOG_H_