Don't crash when granting permissions to active tab.

extensions/renderer/extension_helper.h

 // Copyright 2014 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 EXTENSIONS_RENDERER_EXTENSION_HELPER_H_
 #define EXTENSIONS_RENDERER_EXTENSION_HELPER_H_
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "content/public/common/console_message_level.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "content/public/renderer/render_view_observer_tracker.h"
 #include "extensions/common/view_type.h"
 
 class GURL;
 class SkBitmap;
 struct ExtensionMsg_ExternalConnectionInfo;
 
 namespace base {
 class DictionaryValue;
 class ListValue;
 }
 
 namespace extensions {
 class AutomationApiHelper;
 class Dispatcher;
+class URLPatternSet;
 
 struct Message;
 
 // RenderView-level plumbing for extension features.
 class ExtensionHelper
     : public content::RenderViewObserver,
       public content::RenderViewObserverTracker<ExtensionHelper> {
  public:
   // Returns a list of extension RenderViews that match the given filter
   // criteria. If |browser_window_id| is not extension_misc::kUnknownWindowId,
@@ skipping 44 matching lines @@
                                  const Message& message);
   void OnExtensionDispatchOnDisconnect(int port_id,
                                        const std::string& error_message);
   void OnNotifyRendererViewType(ViewType view_type);
   void OnSetTabId(int tab_id);
   void OnUpdateBrowserWindowId(int window_id);
   void OnAddMessageToConsole(content::ConsoleMessageLevel level,
                              const std::string& message);
   void OnAppWindowClosed();
   void OnSetFrameName(const std::string& name);
+  void OnUpdateTabSpecificPermissions(
+      const GURL& url,
+      const std::string& extension_id,
+      const URLPatternSet& origin_set);
+  void OnClearTabSpecificPermissions(
+      const std::vector<std::string>& extension_ids);
 
   Dispatcher* dispatcher_;
 
   // Type of view attached with RenderView.
   ViewType view_type_;
 
   // Id of the tab which the RenderView is attached to.
   int tab_id_;
 
   // Id number of browser window which RenderView is attached to.
   int browser_window_id_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionHelper);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_EXTENSION_HELPER_H_