Expose WebServiceWorkerNetworkProvider on DataSource

third_party/WebKit/Source/platform/exported/WebURLRequest.cpp

 /*
  * Copyright (C) 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 346 matching lines @@
 }
 
 WebURLRequest::ExtraData* WebURLRequest::getExtraData() const {
   RefPtr<ResourceRequest::ExtraData> data = m_resourceRequest->getExtraData();
   if (!data)
     return 0;
   return static_cast<ExtraDataContainer*>(data.get())->getExtraData();
 }
 
 void WebURLRequest::setExtraData(WebURLRequest::ExtraData* extraData) {
-  m_resourceRequest->setExtraData(ExtraDataContainer::create(extraData));
+  if (extraData != getExtraData())
+    m_resourceRequest->setExtraData(ExtraDataContainer::create(extraData));
 }
 
 ResourceRequest& WebURLRequest::toMutableResourceRequest() {
   DCHECK(m_resourceRequest);
   return *m_resourceRequest;
 }
 
 WebURLRequest::Priority WebURLRequest::getPriority() const {
   return static_cast<WebURLRequest::Priority>(m_resourceRequest->priority());
 }
@@ skipping 49 matching lines @@
 }
 
 const ResourceRequest& WebURLRequest::toResourceRequest() const {
   DCHECK(m_resourceRequest);
   return *m_resourceRequest;
 }
 
 WebURLRequest::WebURLRequest(ResourceRequest& r) : m_resourceRequest(&r) {}
 
 }  // namespace blink