[Fetch API] Remove unused code.

Source/modules/fetch/RequestInit.cpp

 // 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.
 
 #include "config.h"
 #include "modules/fetch/RequestInit.h"
 
 #include "bindings/core/v8/Dictionary.h"
 #include "bindings/core/v8/V8ArrayBuffer.h"
 #include "bindings/core/v8/V8ArrayBufferView.h"
@@ skipping 20 matching lines @@
         else
             DictionaryHelper::get(options, "headers", headersDictionary);
     }
     DictionaryHelper::get(options, "mode", mode);
     DictionaryHelper::get(options, "credentials", credentials);
     DictionaryHelper::get(options, "redirect", redirect);
 
     v8::Local<v8::Value> v8Body;
     if (!DictionaryHelper::get(options, "body", v8Body) || v8Body->IsUndefined() || v8Body->IsNull())
         return;
-    RefPtr<FormData> formData = FormData::create();
     v8::Isolate* isolate = toIsolate(context);
     if (v8Body->IsArrayBuffer()) {
         body = FetchFormDataConsumerHandle::create(V8ArrayBuffer::toImpl(v8::Local<v8::Object>::Cast(v8Body)));
     } else if (v8Body->IsArrayBufferView()) {
         body = FetchFormDataConsumerHandle::create(V8ArrayBufferView::toImpl(v8::Local<v8::Object>::Cast(v8Body)));
     } else if (V8Blob::hasInstance(v8Body, isolate)) {
         RefPtr<BlobDataHandle> blobDataHandle = V8Blob::toImpl(v8::Local<v8::Object>::Cast(v8Body))->blobDataHandle();
         contentType = blobDataHandle->type();
         body = FetchBlobDataConsumerHandle::create(context, blobDataHandle.release());
     } else if (V8FormData::hasInstance(v8Body, isolate)) {
         RefPtr<FormData> formData = V8FormData::toImpl(v8::Local<v8::Object>::Cast(v8Body))->createMultiPartFormData();
         // Here we handle formData->boundary() as a C-style string. See
         // FormDataBuilder::generateUniqueBoundaryString.
         contentType = AtomicString("multipart/form-data; boundary=", AtomicString::ConstructFromLiteral) + formData->boundary().data();
         body = FetchFormDataConsumerHandle::create(context, formData.release());
     } else if (v8Body->IsString()) {
         contentType = "text/plain;charset=UTF-8";
         body = FetchFormDataConsumerHandle::create(toUSVString(isolate, v8Body, exceptionState));
     }
 }
 
 }