[Extensions Bindings] Add a registerEventArgumentMassager

extensions/renderer/api_binding_bridge.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_BINDING_BRIDGE_H_
 #define EXTENSIONS_RENDERER_API_BINDING_BRIDGE_H_
 
 #include <string>
 
 #include "base/macros.h"
 #include "extensions/renderer/api_binding_types.h"
 #include "gin/wrappable.h"
 #include "v8/include/v8.h"
 
 namespace gin {
 class Arguments;
 }
 
 namespace extensions {
 class APIBindingHooks;
+class APIEventHandler;
 class APIRequestHandler;
 class APITypeReferenceMap;
 
 // An object that serves as a bridge between the current JS-centric bindings and
 // the new native bindings system. This basically needs to conform to the public
 // methods of the Binding prototype in binding.js.
 class APIBindingBridge final : public gin::Wrappable<APIBindingBridge> {
  public:
   APIBindingBridge(const APITypeReferenceMap* type_refs,
                    APIRequestHandler* request_handler,
+                   APIEventHandler* event_handler,
                    APIBindingHooks* hooks,
                    v8::Local<v8::Context> context,
                    v8::Local<v8::Value> api_object,
                    const std::string& extension_id,
                    const std::string& context_type,
                    const binding::RunJSFunction& run_js);
   ~APIBindingBridge() override;
 
   static gin::WrapperInfo kWrapperInfo;
 
@@ skipping 12 matching lines @@
   // This should register any hooks that the JS needs for the given API.
   void RegisterCustomHook(v8::Isolate* isolate,
                           v8::Local<v8::Function> function);
 
   // A handler to initiate an API request through the APIRequestHandler. A
   // replacement for custom bindings that utilize require('sendRequest').
   void SendRequest(gin::Arguments* arguments,
                    const std::string& name,
                    const std::vector<v8::Local<v8::Value>>& request_args);
 
+  // A handler to register an argument massager for a specific event.
+  // Replacement for event_bindings.registerArgumentMassager.
+  void RegisterEventArgumentMassager(gin::Arguments* arguments,
+                                     const std::string& event_name,
+                                     v8::Local<v8::Function> massager);
+
   // Type references. Guaranteed to outlive this object.
   const APITypeReferenceMap* type_refs_;
 
   // The request handler. Guaranteed to outlive this object.
   APIRequestHandler* request_handler_;
 
+  // The event handler. Guaranteed to outlive this object.
+  APIEventHandler* event_handler_;
+
   // The hooks associated with this API. Guaranteed to outlive this object.
   APIBindingHooks* hooks_;
 
   // The id of the extension that owns the context this belongs to.
   std::string extension_id_;
 
   // The type of context this belongs to.
   std::string context_type_;
 
   // A function to run JS safely.
   binding::RunJSFunction run_js_;
 
   DISALLOW_COPY_AND_ASSIGN(APIBindingBridge);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_RENDERER_API_BINDING_BRIDGE_H_