Move Fetch API releted code to modules/fetch.

Source/modules/fetch/Body.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/serviceworkers/Body.h"
+#include "modules/fetch/Body.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/V8ArrayBuffer.h"
 #include "bindings/core/v8/V8ThrowException.h"
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/fileapi/Blob.h"
 #include "core/fileapi/FileReaderLoader.h"
 #include "core/fileapi/FileReaderLoaderClient.h"
 #include "core/streams/UnderlyingSource.h"
-#include "modules/serviceworkers/BodyStreamBuffer.h"
+#include "modules/fetch/BodyStreamBuffer.h"
 
 namespace blink {
 
 class Body::BlobHandleReceiver final : public BodyStreamBuffer::BlobHandleCreatorClient {
 public:
     explicit BlobHandleReceiver(Body* body)
         : m_body(body)
     {
     }
     void didCreateBlobHandle(PassRefPtr<BlobDataHandle> handle) override
@@ skipping 401 matching lines @@
 
 void Body::didBlobHandleReceiveError(PassRefPtrWillBeRawPtr<DOMException> exception)
 {
     if (!m_resolver)
         return;
     m_resolver->reject(exception);
     m_resolver.clear();
 }
 
 } // namespace blink