bindings: Supports constructor attributes on prototype chains.

Source/bindings/core/v8/V8Binding.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 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 56 matching lines @@
 #include "wtf/text/AtomicString.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/StringBuffer.h"
 #include "wtf/text/StringHash.h"
 #include "wtf/text/WTFString.h"
 #include "wtf/unicode/CharacterNames.h"
 #include "wtf/unicode/Unicode.h"
 
 namespace blink {
 
+namespace {
+
+template<class Callback>
+void v8ConstructorAttributeGetter(const Callback& info)
+{
+    v8::Local<v8::Value> data = info.Data();
+    ASSERT(data->IsExternal());
+    V8PerContextData* perContextData = V8PerContextData::from(info.Holder()->CreationContext());
+    if (!perContextData)
+        return;
+    v8SetReturnValue(info, perContextData->constructorForType(WrapperTypeInfo::unwrap(data)));
+}
+
+} // namespace
+
 void setArityTypeError(ExceptionState& exceptionState, const char* valid, unsigned provided)
 {
     exceptionState.throwTypeError(ExceptionMessages::invalidArity(valid, provided));
 }
 
 v8::Local<v8::Value> createMinimumArityTypeErrorForMethod(v8::Isolate* isolate, const char* method, const char* type, unsigned expected, unsigned provided)
 {
     return V8ThrowException::createTypeError(isolate, ExceptionMessages::failedToExecute(method, type, ExceptionMessages::notEnoughArguments(expected, provided)));
 }
 
@@ skipping 951 matching lines @@
     ensureInitialized();
     return m_resourceName;
 }
 
 PassRefPtr<TraceEvent::ConvertableToTraceFormat> devToolsTraceEventData(v8::Isolate* isolate, ExecutionContext* context, v8::Handle<v8::Function> function)
 {
     DevToolsFunctionInfo info(function);
     return InspectorFunctionCallEvent::data(context, info.scriptId(), info.resourceName(), info.lineNumber());
 }
 
+void v8ConstructorAttributeGetterAsProperty(v8::Local<v8::String> propertyName, const v8::PropertyCallbackInfo<v8::Value>& info)
+{
+    v8ConstructorAttributeGetter(info);
+}
+
+void v8ConstructorAttributeGetterAsAccessor(const v8::FunctionCallbackInfo<v8::Value>& info)
+{
+    v8ConstructorAttributeGetter(info);
+}
+
 } // namespace blink