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

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerRegistration.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 "modules/serviceworkers/ServiceWorkerRegistration.h"
 
 #include "bindings/core/v8/CallbackPromiseAdapter.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/DOMException.h"
@@ skipping 70 matching lines @@
 NavigationPreloadManager* ServiceWorkerRegistration::navigationPreload() {
   if (!m_navigationPreload)
     m_navigationPreload = NavigationPreloadManager::create(this);
   return m_navigationPreload;
 }
 
 String ServiceWorkerRegistration::scope() const {
   return m_handle->registration()->scope().string();
 }
 
+bool ServiceWorkerRegistration::useCache() const {
+  return m_handle->registration()->useCache();
+}
+
 ScriptPromise ServiceWorkerRegistration::update(ScriptState* scriptState) {
   ServiceWorkerContainerClient* client =
       ServiceWorkerContainerClient::from(getExecutionContext());
   if (!client || !client->provider())
     return ScriptPromise::rejectWithDOMException(
         scriptState,
         DOMException::create(InvalidStateError,
                              "Failed to update a ServiceWorkerRegistration: No "
                              "associated provider is available."));
 
@@ skipping 58 matching lines @@
 }
 
 void ServiceWorkerRegistration::contextDestroyed(ExecutionContext*) {
   if (m_stopped)
     return;
   m_stopped = true;
   m_handle->registration()->proxyStopped();
 }
 
 }  // namespace blink