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

chrome/browser/ui/blocked_content/blocked_content_container.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.
 
 // Defines the public interface for the blocked content (including popup)
 // notifications. This interface should only be used by the
 // BlockedContentTabHelper. Users and subclasses of WebContents/TabContents
 // should use the appropriate methods on BlockedContentTabHelper to access
 // information about blocked content.
 
@@ skipping 40 matching lines @@
   virtual TabContents* GetConstrainingTabContents(TabContents* source) OVERRIDE;
 
   // Overridden from content::WebContentsDelegate:
 
   // Forwards OpenURLFromTab to our |owner_|.
   virtual content::WebContents* OpenURLFromTab(
       content::WebContents* source,
       const content::OpenURLParams& params) OVERRIDE;
 
   // Forwards AddNewContents to our |owner_|.
-  virtual void AddNewContents(content::WebContents* source,
+  virtual bool AddNewContents(content::WebContents* source,
                               content::WebContents* new_contents,
                               WindowOpenDisposition disposition,
                               const gfx::Rect& initial_position,
                               bool user_gesture) OVERRIDE;
 
   // Removes |source| from our internal list of blocked contents.
   virtual void CloseContents(content::WebContents* source) OVERRIDE;
 
   // Changes the opening rectangle associated with |source|.
   virtual void MoveContents(content::WebContents* source,
@@ skipping 18 matching lines @@
   // The TabContents that owns and constrains this BlockedContentContainer.
   TabContents* owner_;
 
   // Information about all blocked contents.
   BlockedContents blocked_contents_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(BlockedContentContainer);
 };
 
 #endif  // CHROME_BROWSER_UI_BLOCKED_CONTENT_BLOCKED_CONTENT_CONTAINER_H_