[Mojo] Improve JavaScript API for MojoReadMessage

gin/converter.h

 // Copyright 2013 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 GIN_CONVERTER_H_
 #define GIN_CONVERTER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 70 matching lines @@
 
 template<>
 struct Converter<v8::Handle<v8::Object> > {
   static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
                                     v8::Handle<v8::Object> val);
   static bool FromV8(v8::Handle<v8::Value> val,
                      v8::Handle<v8::Object>* out);
 };
 
 template<>
+struct Converter<v8::Handle<v8::ArrayBuffer> > {
+  static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
+                                    v8::Handle<v8::ArrayBuffer> val);
+  static bool FromV8(v8::Handle<v8::Value> val,
+                     v8::Handle<v8::ArrayBuffer>* out);
+};
+
+template<>
 struct Converter<v8::Handle<v8::External> > {
   static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
                                     v8::Handle<v8::External> val);
   static bool FromV8(v8::Handle<v8::Value> val,
                      v8::Handle<v8::External>* out);
 };
 
 template<>
 struct Converter<v8::Handle<v8::Value> > {
   static v8::Handle<v8::Value> ToV8(v8::Isolate* isolate,
@@ skipping 49 matching lines @@
                                       const std::string& val);
 
 template<typename T>
 bool ConvertFromV8(v8::Handle<v8::Value> input, T* result) {
   return Converter<T>::FromV8(input, result);
 }
 
 }  // namespace gin
 
 #endif  // GIN_CONVERTER_H_