Pass result of blockage across content API when new tab blocked.

chrome/browser/ui/gtk/web_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_WEB_DIALOG_GTK_H_
 #define CHROME_BROWSER_UI_GTK_WEB_DIALOG_GTK_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 40 matching lines @@
   virtual bool ShouldShowDialogTitle() const OVERRIDE;
 
   // Overridden from content::WebContentsDelegate:
   virtual void HandleKeyboardEvent(
       content::WebContents* source,
       const content::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,
+  virtual bool AddNewContents(content::WebContents* source,
                               content::WebContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_pos,
                               bool user_gesture) OVERRIDE;
   virtual void LoadingStateChanged(content::WebContents* source) OVERRIDE;
 
  private:
   CHROMEGTK_CALLBACK_1(WebDialogGtk, 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.
   ui::WebDialogDelegate* delegate_;
 
   gfx::NativeWindow parent_window_;
 
   GtkWidget* dialog_;
 
   scoped_ptr<TabContents> tab_;
   scoped_ptr<TabContentsContainerGtk> tab_contents_container_;
 
   DISALLOW_COPY_AND_ASSIGN(WebDialogGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_WEB_DIALOG_GTK_H_