PlzNavigate: Make ServiceWorker work with PlzNavigate.

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.
+  // It's safe to use base::Unretained since this is the only call to the
+  // destructor.
+  BrowserThread::PostTask(
+      BrowserThread::IO, FROM_HERE,
+      base::Bind(&ServiceWorkerNavigationHandleCore::Destroy,
+                 base::Unretained(core_)));

[kinuko, 2015/10/20 14:46:07]

nit: could this use BrowserThread::DeleteSoon() and some of the code in Destroy
be in the dtor?

[clamy, 2015/10/21 16:33:48]

Done.

+}
+
+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