PlzNavigate: detect when a ServiceWorker is present

content/browser/service_worker/service_worker_navigation_handle.cc

-// Copyright 2015 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 "content/browser/service_worker/service_worker_navigation_handle.h"
-
-#include "base/bind.h"
-#include "content/browser/service_worker/service_worker_navigation_handle_core.h"
-#include "content/common/service_worker/service_worker_types.h"
-#include "content/public/browser/browser_thread.h"
-
-namespace content {
-
-ServiceWorkerNavigationHandle::ServiceWorkerNavigationHandle(
-    ServiceWorkerContextWrapper* context_wrapper)
-    : service_worker_provider_host_id_(kInvalidServiceWorkerProviderId),
-      weak_factory_(this) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  core_ = new ServiceWorkerNavigationHandleCore(weak_factory_.GetWeakPtr(),
-                                                context_wrapper);
-}
-
-ServiceWorkerNavigationHandle::~ServiceWorkerNavigationHandle() {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  // Delete the ServiceWorkerNavigationHandleCore on the IO thread.
-  BrowserThread::DeleteSoon(BrowserThread::IO, FROM_HERE, core_);
-}
-
-void ServiceWorkerNavigationHandle::DidCreateServiceWorkerProviderHost(
-    int service_worker_provider_host_id) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  service_worker_provider_host_id_ = service_worker_provider_host_id;
-}
-
-}  // namespace content