Only include NotImplemented.h when it is actually used (when notImplemented() is called).

Source/modules/serviceworkers/Request.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 "Request.h"
 
 #include "bindings/core/v8/Dictionary.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/fetch/FetchUtils.h"
 #include "core/fetch/ResourceLoaderOptions.h"
 #include "core/loader/ThreadableLoader.h"
 #include "core/xml/XMLHttpRequest.h"
 #include "modules/serviceworkers/FetchManager.h"
 #include "modules/serviceworkers/RequestInit.h"
-#include "platform/NotImplemented.h"
 #include "platform/network/HTTPParsers.h"
 #include "platform/network/ResourceRequest.h"
 #include "platform/weborigin/Referrer.h"
 #include "public/platform/WebServiceWorkerRequest.h"
 
 namespace blink {
 
 Request* Request::createRequestWithRequestData(ExecutionContext* context, FetchRequestData* request, const RequestInit& init, FetchRequestData::Mode mode, FetchRequestData::Credentials credentials, ExceptionState& exceptionState)
 {
     // "7. Let |mode| be |init|'s mode member if it is present, and
@@ skipping 304 matching lines @@
 }
 
 void Request::trace(Visitor* visitor)
 {
     Body::trace(visitor);
     visitor->trace(m_request);
     visitor->trace(m_headers);
 }
 
 } // namespace blink