[Extensions Bindings] Don't allow `event` module with native bindings

extensions/renderer/declarative_event.h

 // Copyright 2017 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_DECLARATIVE_EVENT_H_
 #define EXTENSIONS_RENDERER_DECLARATIVE_EVENT_H_
 
 #include <vector>
 
 #include "gin/wrappable.h"
 #include "v8/include/v8.h"
 
 namespace gin {
 class Arguments;
 }
 
 namespace extensions {
 class APIRequestHandler;
 class APITypeReferenceMap;
 
 // A gin::Wrappable object for declarative events (i.e., events that support
 // "rules"). Unlike regular events, these do not have associated listeners, and
 // extensions register an action to perform when the event happens.
 class DeclarativeEvent final : public gin::Wrappable<DeclarativeEvent> {
  public:
   DeclarativeEvent(const std::string& name,
                    APITypeReferenceMap* type_refs,
                    APIRequestHandler* request_handler,
                    const std::vector<std::string>& actions_list,
-                   const std::vector<std::string>& conditions_list);
+                   const std::vector<std::string>& conditions_list,
+                   int webview_instance_id);
   ~DeclarativeEvent() override;
 
   static gin::WrapperInfo kWrapperInfo;
 
   // gin::Wrappable:
   gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
       v8::Isolate* isolate) final;
 
  private:
   // Bound methods for the JS object.
   void AddRules(gin::Arguments* arguments);
   void RemoveRules(gin::Arguments* arguments);
   void GetRules(gin::Arguments* arguments);
 
   void HandleFunction(const std::string& signature_name,
                       const std::string& request_name,
                       gin::Arguments* arguments);
 
   std::string event_name_;
 
   APITypeReferenceMap* type_refs_;
 
   APIRequestHandler* request_handler_;
 
+  const int webview_instance_id_;
+
   DISALLOW_COPY_AND_ASSIGN(DeclarativeEvent);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_DECLARATIVE_EVENT_H_