Fix JSON.stringify behavior for Dart Lists faking being arrays by adding stringify method. Test is …

Source/bindings/core/dart/DartJsInterop.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 2805 matching lines @@
         protoTemplate ->Set(v8::String::NewFromUtf8(v8Isolate, "push"), v8::FunctionTemplate::New(v8Isolate, arrayPushCallback), v8::DontEnum);
         protoTemplate ->Set(v8::String::NewFromUtf8(v8Isolate, "pop"), v8::FunctionTemplate::New(v8Isolate, arrayPopCallback), v8::DontEnum);
         protoTemplate ->Set(v8::String::NewFromUtf8(v8Isolate, "concat"), v8::FunctionTemplate::New(v8Isolate, concatCallback), v8::DontEnum);
         protoTemplate ->Set(v8::String::NewFromUtf8(v8Isolate, "reverse"), v8::FunctionTemplate::New(v8Isolate, arrayReverseCallback), v8::DontEnum);
 
         protoTemplate ->Set(v8::String::NewFromUtf8(v8Isolate, "shift"), v8::FunctionTemplate::New(v8Isolate, arrayShiftCallback), v8::DontEnum);
         protoTemplate ->Set(v8::String::NewFromUtf8(v8Isolate, "unshift"), v8::FunctionTemplate::New(v8Isolate, arrayUnshiftCallback), v8::DontEnum);
         protoTemplate ->Set(v8::String::NewFromUtf8(v8Isolate, "splice"), v8::FunctionTemplate::New(v8Isolate, arraySpliceCallback), v8::DontEnum);
         protoTemplate ->Set(v8::String::NewFromUtf8(v8Isolate, "sort"), v8::FunctionTemplate::New(v8Isolate, arraySortCallback), v8::DontEnum);
         protoTemplate ->Set(v8::String::NewFromUtf8(v8Isolate, "$toJsArray"), v8::FunctionTemplate::New(v8Isolate, toJsArrayCallback), v8::DontEnum);
+        protoTemplate ->Set(v8::String::NewFromUtf8(v8Isolate, "toJSON"), v8::FunctionTemplate::New(v8Isolate, toJsArrayCallback), v8::DontEnum);
         
         // ES6 experimental properties not currently supported that we could support if needed.
         // These would require building separate live proxy objects.
         // "entries",
         // "values",
         // "keys"
 
         v8::Local<v8::ObjectTemplate> instanceTemplate = setupInstanceTemplate(proxyTemplateLocal);
         instanceTemplate->SetIndexedPropertyHandler(&indexedGetterArray, &indexedSetterArray, 0, 0, &indexedEnumeratorArray);
         instanceTemplate->SetNamedPropertyHandler(&arrayNamedPropertyGetter, &arrayNamedPropertySetter, &arrayQueryProperty, &arrayDeleteProperty, 0);
@@ skipping 26 matching lines @@
 
         proxyTemplateLocal->SetClassName(v8::String::NewFromUtf8(v8Isolate, "DartObject"));
         setupInstanceTemplate(proxyTemplateLocal);
     } else {
         proxyTemplateLocal = v8::Local<v8::FunctionTemplate>::New(v8Isolate, proxyTemplate);
     }
     return proxyTemplateLocal;
 }
 
 }