Add a blocking version of the sync promo dialog

chrome/browser/ui/gtk/html_dialog_gtk.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_GTK_HTML_DIALOG_GTK_H_
 #define CHROME_BROWSER_UI_GTK_HTML_DIALOG_GTK_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 37 matching lines @@
   virtual std::string GetDialogArgs() const OVERRIDE;
   virtual void OnDialogClosed(const std::string& json_retval) OVERRIDE;
   virtual void OnCloseContents(content::WebContents* source,
                                bool* out_close_dialog) OVERRIDE;
   virtual bool ShouldShowDialogTitle() const OVERRIDE;
 
   // Overridden from content::WebContentsDelegate:
   virtual void HandleKeyboardEvent(
       const NativeWebKeyboardEvent& event) OVERRIDE;
   virtual void CloseContents(content::WebContents* source) OVERRIDE;
+  virtual content::WebContents* OpenURLFromTab(
+      content::WebContents* source,
+      const content::OpenURLParams& params) OVERRIDE;
+  virtual void AddNewContents(content::WebContents* source,
+                              content::WebContents* new_contents,
+                              WindowOpenDisposition disposition,
+                              const gfx::Rect& initial_pos,
+                              bool user_gesture) OVERRIDE;
 
  private:
   CHROMEGTK_CALLBACK_1(HtmlDialogGtk, void, OnResponse, int);
 
   // This view is a delegate to the HTML content since it needs to get notified
   // about when the dialog is closing. For all other actions (besides dialog
   // closing) we delegate to the creator of this view, which we keep track of
   // using this variable.
   HtmlDialogUIDelegate* delegate_;
 
   gfx::NativeWindow parent_window_;
 
   GtkWidget* dialog_;
 
   scoped_ptr<HtmlDialogController> dialog_controller_;
   scoped_ptr<TabContentsWrapper> tab_;
   scoped_ptr<TabContentsContainerGtk> tab_contents_container_;
 
   DISALLOW_COPY_AND_ASSIGN(HtmlDialogGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_HTML_DIALOG_GTK_H_