PlzNavigate: Make ServiceWorker work with PlzNavigate.

content/browser/service_worker/service_worker_navigation_handle_core.h

Index: content/browser/service_worker/service_worker_navigation_handle_core.h
diff --git a/content/browser/service_worker/service_worker_navigation_handle_core.h b/content/browser/service_worker/service_worker_navigation_handle_core.h
new file mode 100644
index 0000000000000000000000000000000000000000..9c1e2b6e5461fc050b787c1955b3576bebda2aac
--- /dev/null
+++ b/content/browser/service_worker/service_worker_navigation_handle_core.h
@@ -0,0 +1,61 @@
+// 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.
+
+#ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_NAVIGATION_HANDLE_CORE_H_
+#define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_NAVIGATION_HANDLE_CORE_H_
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+
+namespace content {
+
+class ServiceWorkerContextWrapper;
+class ServiceWorkerNavigationHandle;
+class ServiceWorkerProviderHost;
+
+// PlzNavigate
+// This class is used to manage the lifetime of ServiceWorkerProviderHosts
+// created during navigations. This class is created on the UI thread, but
+// should only be accessed from the IO thread afterwards. It is the IO thread
+// pendant of ServiceWorkerNavigationHandle. See the
+// ServiceWorkerNavigationHandle header for more details about the lifetime of
+// both classes.
+class ServiceWorkerNavigationHandleCore {
+ public:
+  ServiceWorkerNavigationHandleCore(
+      base::WeakPtr<ServiceWorkerNavigationHandle> ui_handle,
+      ServiceWorkerContextWrapper* context_wrapper);
+
+  // Called from the UI thread to destroy this object on the IO thread.
+  void Destroy();
+
+  // Called when a ServiceWorkerProviderHost was pre-created for the navigation
+  // tracked by this ServiceWorkerNavigationHandleCore. Takes ownership of
+  // |precreated_host|.
+  void DidPreCreateProviderHost(
+      scoped_ptr<ServiceWorkerProviderHost> precreated_host);
+
+  // Called when the renderer created a ServiceWorkerNetworkProvider matching
+  // |precreated_host_|. This releases ownership of |precreated_host_|.
+  scoped_ptr<ServiceWorkerProviderHost> RetrievePreCreatedHost();
+
+  ServiceWorkerContextWrapper* context_wrapper() const {
+    return context_wrapper_.get();
+  }
+
+ private:
+  ~ServiceWorkerNavigationHandleCore();
+
+  scoped_ptr<ServiceWorkerProviderHost> precreated_host_;
+  scoped_refptr<ServiceWorkerContextWrapper> context_wrapper_;
+  base::WeakPtr<ServiceWorkerNavigationHandle> ui_handle_;
+
+  DISALLOW_COPY_AND_ASSIGN(ServiceWorkerNavigationHandleCore);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_NAVIGATION_HANDLE_CORE_H_