Don't crash when granting permissions to active tab.

extensions/renderer/dispatcher_delegate.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_DISPATCHER_DELEGATE_H_
 #define EXTENSIONS_RENDERER_DISPATCHER_DELEGATE_H_
 
 #include <set>
 #include <string>
 
@@ skipping 47 matching lines @@
 
   // Allows the delegate to respond to an updated set of active extensions in
   // the Dispatcher.
   virtual void OnActiveExtensionsUpdated(
       const std::set<std::string>& extension_ids) {}
 
   // Sets the current Chrome channel.
   // TODO(rockot): This doesn't belong in a generic extensions system interface.
   // See http://crbug.com/368431.
   virtual void SetChannel(int channel) {}
-
-  // Clears extension permissions specific to a given tab.
-  // TODO(rockot): This doesn't belong in a generic extensions system interface.
-  // See http://crbug.com/368431.
-  virtual void ClearTabSpecificPermissions(
-      const extensions::Dispatcher* dispatcher,
-      int tab_id,
-      const std::vector<std::string>& extension_ids) {}
-
-  // Updates extension permissions specific to a given tab.
-  // TODO(rockot): This doesn't belong in a generic extensions system interface.
-  // See http://crbug.com/368431.
-  virtual void UpdateTabSpecificPermissions(
-      const extensions::Dispatcher* dispatcher,
-      const GURL& url,
-      int tab_id,
-      const std::string& extension_id,
-      const extensions::URLPatternSet& origin_set) {}
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_DISPATCHER_DELEGATE_H_