service worker: Add promise boilerplate for NavigationPreload enable/disable

third_party/WebKit/Source/modules/serviceworkers/NavigationPreloadCallbacks.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/NavigationPreloadCallbacks.h"
+
+#include "bindings/core/v8/ScriptPromiseResolver.h"
+#include "core/dom/DOMException.h"
+#include "modules/serviceworkers/ServiceWorkerError.h"
+
+namespace blink {
+
+EnableNavigationPreloadCallbacks::EnableNavigationPreloadCallbacks(
+    ScriptPromiseResolver* resolver)
+    : m_resolver(resolver) {
+  DCHECK(m_resolver);
+}
+
+EnableNavigationPreloadCallbacks::~EnableNavigationPreloadCallbacks() {}
+
+void EnableNavigationPreloadCallbacks::onSuccess() {
+  if (!m_resolver->getExecutionContext() ||
+      m_resolver->getExecutionContext()->activeDOMObjectsAreStopped())
+    return;
+  m_resolver->resolve();
+}
+
+void EnableNavigationPreloadCallbacks::onError(
+    const WebServiceWorkerError& error) {
+  if (!m_resolver->getExecutionContext() ||
+      m_resolver->getExecutionContext()->activeDOMObjectsAreStopped())
+    return;
+  m_resolver->reject(ServiceWorkerError::take(m_resolver.get(), error));
+}
+
+DisableNavigationPreloadCallbacks::DisableNavigationPreloadCallbacks(
+    ScriptPromiseResolver* resolver)
+    : m_resolver(resolver) {
+  DCHECK(m_resolver);
+}
+
+DisableNavigationPreloadCallbacks::~DisableNavigationPreloadCallbacks() {}
+
+void DisableNavigationPreloadCallbacks::onSuccess() {
+  if (!m_resolver->getExecutionContext() ||
+      m_resolver->getExecutionContext()->activeDOMObjectsAreStopped())
+    return;
+  m_resolver->resolve();
+}
+
+void DisableNavigationPreloadCallbacks::onError(
+    const WebServiceWorkerError& error) {
+  if (!m_resolver->getExecutionContext() ||
+      m_resolver->getExecutionContext()->activeDOMObjectsAreStopped())
+    return;
+  m_resolver->reject(ServiceWorkerError::take(m_resolver.get(), error));
+}
+
+}  // namespace blink