[Fetch API] Send request body as a FormData.

Source/modules/fetch/RequestInit.h

 // Copyright 2014 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 RequestInit_h
 #define RequestInit_h
 
 #include "bindings/core/v8/Dictionary.h"
 #include "platform/heap/Handle.h"
+#include "wtf/OwnPtr.h"
 #include "wtf/RefPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
-class BlobDataHandle;
 class ExceptionState;
+class FetchDataConsumerHandle;
 class Headers;
 
 // FIXME: Use IDL dictionary instead of this class.
 class RequestInit {
     STACK_ALLOCATED();
 public:
     explicit RequestInit(ExecutionContext*, const Dictionary&, ExceptionState&);
 
     String method;
     Member<Headers> headers;
     Dictionary headersDictionary;
-    RefPtr<BlobDataHandle> bodyBlobHandle;
+    String contentType;
+    OwnPtr<FetchDataConsumerHandle> body;
     String mode;
     String credentials;
     String redirect;
 };
 
 }
 
 #endif // RequestInit_h