Implement updateViaCache flag and no-cache by default for main service worker scripts

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerLinkResource.cpp

 // Copyright 2016 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 "modules/serviceworkers/ServiceWorkerLinkResource.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/Document.h"
 #include "core/frame/DOMWindow.h"
@@ skipping 62 matching lines @@
   KURL scriptURL = m_owner->href();
 
   String scope = m_owner->scope();
   KURL scopeURL;
   if (scope.isNull())
     scopeURL = KURL(scriptURL, "./");
   else
     scopeURL = document.completeURL(scope);
   scopeURL.removeFragmentIdentifier();
 
+  bool useCache = m_owner->useCache();
+
   String errorMessage;
   ServiceWorkerContainer* container = NavigatorServiceWorker::serviceWorker(
       ScriptState::forMainWorld(m_owner->document().frame()),
       *document.frame()->domWindow()->navigator(), errorMessage);
 
   if (!container) {
     document.addConsoleMessage(ConsoleMessage::create(
         JSMessageSource, ErrorMessageLevel,
         "Cannot register service worker with <link> element. " + errorMessage));
     WTF::makeUnique<RegistrationCallback>(m_owner)->onError(
         WebServiceWorkerError(WebServiceWorkerError::ErrorTypeSecurity,
                               errorMessage));
     return;
   }
 
   container->registerServiceWorkerImpl(
-      &document, scriptURL, scopeURL,
+      &document, scriptURL, scopeURL, useCache,
       WTF::makeUnique<RegistrationCallback>(m_owner));
 }
 
 bool ServiceWorkerLinkResource::hasLoaded() const {
   return false;
 }
 
 void ServiceWorkerLinkResource::ownerRemoved() {
   process();
 }
 
 ServiceWorkerLinkResource::ServiceWorkerLinkResource(HTMLLinkElement* owner)
     : LinkResource(owner) {}
 
 }  // namespace blink