[Extensions Bindings] Handle updating context permissions

extensions/renderer/api_bindings_system.h

 // Copyright 2016 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_API_BINDINGS_SYSTEM_H_
 #define EXTENSIONS_RENDERER_API_BINDINGS_SYSTEM_H_
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 26 matching lines @@
       v8::Isolate* isolate,
       const std::string& property_name,
       const base::ListValue* property_values,
       APIRequestHandler* request_handler,
       APIEventHandler* event_handler,
       APITypeReferenceMap* type_refs)>;
 
   APIBindingsSystem(const binding::RunJSFunction& call_js,
                     const binding::RunJSFunctionSync& call_js_sync,
                     const GetAPISchemaMethod& get_api_schema,
+                    const APIBinding::AvailabilityCallback& is_available,
                     const APIRequestHandler::SendRequestMethod& send_request,
                     const APIEventHandler::EventListenersChangedMethod&
                         event_listeners_changed,
                     APILastError last_error);
   ~APIBindingsSystem();
 
   // Returns a new v8::Object representing the api specified by |api_name|.
   v8::Local<v8::Object> CreateAPIInstance(
       const std::string& api_name,
       v8::Local<v8::Context> context,
-      const APIBinding::AvailabilityCallback& is_available,
       APIBindingHooks** hooks_out);
 
   // Responds to the request with the given |request_id|, calling the callback
   // with |response|. If |error| is non-empty, sets the last error.
   void CompleteRequest(int request_id,
                        const base::ListValue& response,
                        const std::string& error);
 
   // Notifies the APIEventHandler to fire the corresponding event, notifying
   // listeners.
@@ skipping 60 matching lines @@
   std::map<std::string, CustomTypeHandler> custom_types_;
 
   binding::RunJSFunction call_js_;
 
   binding::RunJSFunctionSync call_js_sync_;
 
   // The method to retrieve the DictionaryValue describing a given extension
   // API. Curried in for testing purposes so we can use fake APIs.
   GetAPISchemaMethod get_api_schema_;
 
+  APIBinding::AvailabilityCallback is_available_;
+
   DISALLOW_COPY_AND_ASSIGN(APIBindingsSystem);
 };
 
 }  // namespace
 
 #endif  // EXTENSIONS_RENDERER_API_BINDINGS_SYSTEM_H_