[WIP] off-main-thread loading

third_party/WebKit/Source/web/WebEmbeddedWorkerImpl.cpp

 /*
  * Copyright (C) 2013 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 20 matching lines @@
 #include "web/WebEmbeddedWorkerImpl.h"
 
 #include <memory>
 #include "bindings/core/v8/SourceLocation.h"
 #include "core/dom/Document.h"
 #include "core/dom/SecurityContext.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "core/loader/FrameLoadRequest.h"
 #include "core/loader/ThreadableLoadingContext.h"
+#include "core/loader/WorkerFetchContext.h"
 #include "core/probe/CoreProbes.h"
 #include "core/workers/ParentFrameTaskRunners.h"
 #include "core/workers/WorkerClients.h"
 #include "core/workers/WorkerGlobalScope.h"
 #include "core/workers/WorkerInspectorProxy.h"
 #include "core/workers/WorkerLoaderProxy.h"
 #include "core/workers/WorkerScriptLoader.h"
 #include "core/workers/WorkerThreadStartupData.h"
 #include "modules/serviceworkers/ServiceWorkerContainerClient.h"
 #include "modules/serviceworkers/ServiceWorkerThread.h"
@@ skipping 275 matching lines @@
       SharedBuffer::create(content.data(), content.length()));
   m_loadingShadowPage = true;
   m_mainFrame->frame()->loader().load(
       FrameLoadRequest(0, ResourceRequest(m_workerStartData.scriptURL),
                        SubstituteData(buffer, "text/html", "UTF-8", KURL())));
 }
 
 void WebEmbeddedWorkerImpl::didFinishDocumentLoad(WebLocalFrame* frame) {
   DCHECK_EQ(frame, m_mainFrame);
   DCHECK(!m_mainScriptLoader);
+  DCHECK(!m_webWorkerFetchContextInfo);
   DCHECK(m_mainFrame);
   DCHECK(m_workerContextClient);
   DCHECK(m_loadingShadowPage);
   DCHECK(!m_askedToTerminate);
   m_loadingShadowPage = false;
   frame->dataSource()->setServiceWorkerNetworkProvider(WTF::wrapUnique(
       m_workerContextClient->createServiceWorkerNetworkProvider()));
+  m_webWorkerFetchContextInfo = WTF::wrapUnique(
+      m_workerContextClient->createServiceWorkerFetchContextInfo());
   m_mainScriptLoader = WorkerScriptLoader::create();
   m_mainScriptLoader->setRequestContext(
       WebURLRequest::RequestContextServiceWorker);
   m_mainScriptLoader->loadAsynchronously(
       *m_mainFrame->frame()->document(), m_workerStartData.scriptURL,
       DenyCrossOriginRequests, m_workerStartData.addressSpace, nullptr,
       bind(&WebEmbeddedWorkerImpl::onScriptLoaderFinished,
            WTF::unretained(this)));
   // Do nothing here since onScriptLoaderFinished() might have been already
   // invoked and |this| might have been deleted at this point.
@@ skipping 70 matching lines @@
                                        std::move(m_contentSettingsClient));
   provideIndexedDBClientToWorker(workerClients,
                                  IndexedDBClientImpl::create(*workerClients));
   provideServiceWorkerGlobalScopeClientToWorker(
       workerClients,
       ServiceWorkerGlobalScopeClientImpl::create(*m_workerContextClient));
   provideServiceWorkerContainerClientToWorker(
       workerClients,
       WTF::wrapUnique(m_workerContextClient->createServiceWorkerProvider()));
 
+  // |m_webWorkerFetchContextInfo| is null if off-main-thread-fetch is disabled.
+  if (m_webWorkerFetchContextInfo) {
+    provideWorkerFetchContextInfoToWorker(
+        workerClients, std::move(m_webWorkerFetchContextInfo));
+    WorkerFetchContextInfo* workerFetchContextInfo =
+        WorkerFetchContextInfo::from(*workerClients);
+    workerFetchContextInfo->setDataSaverEnabled(
+        document->frame()->settings()->getDataSaverEnabled());
+  }
+
   // We need to set the CSP to both the shadow page's document and the
   // ServiceWorkerGlobalScope.
   document->initContentSecurityPolicy(
       m_mainScriptLoader->releaseContentSecurityPolicy());
   if (!m_mainScriptLoader->getReferrerPolicy().isNull()) {
     document->parseAndSetReferrerPolicy(
         m_mainScriptLoader->getReferrerPolicy());
   }
 
   KURL scriptURL = m_mainScriptLoader->url();
@@ skipping 28 matching lines @@
       *this, *document, *m_workerContextClient);
   m_loaderProxy = WorkerLoaderProxy::create(this);
   m_workerThread =
       ServiceWorkerThread::create(m_loaderProxy, *m_workerGlobalScopeProxy);
   m_workerThread->start(std::move(startupData), m_mainThreadTaskRunners.get());
   m_workerInspectorProxy->workerThreadCreated(document, m_workerThread.get(),
                                               scriptURL);
 }
 
 }  // namespace blink