Support new style JS interop

Source/bindings/core/dart/DartJsInteropData.h

 /*
  * 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 21 matching lines @@
 #define DartJsInteropData_h
 
 #include "wtf/RefCounted.h"
 
 #include <v8.h>
 
 namespace blink {
 
 class DartJsInteropData {
 public:
+    DartJsInteropData() { m_jsObjectImplDefined = false; }
+
     v8::Local<v8::Function> captureThisFunction();
     v8::Local<v8::Function> wrapDartFunction();
     v8::Local<v8::Function> instanceofFunction();
 
+    bool jsObjectImplDefined() { return m_jsObjectImplDefined; }

[Jacob, 2015/06/18 22:22:44]

Needed so that we can determine whether it is too late to define a JSObjectImpl
class that implements all of the JavaScript interfaces we are interested in.

+    void setJsObjectImplDefined() { m_jsObjectImplDefined = true; }
+
 private:
     static v8::Local<v8::Function> cacheFunction(v8::Persistent<v8::Function>* cache, const char* scriptSrc);
 
     v8::Persistent<v8::Function> m_captureThisFunction;
     v8::Persistent<v8::Function> m_wrapDartFunction;
     v8::Persistent<v8::Function> m_instanceofFunction;
 
+    bool m_jsObjectImplDefined;
+
     // FIXME: add maps of Dart to V8 and V8 to Dart objects.
 };
 
 }
 
 #endif // DartJsInteropData_h