Extract RuntimeEventRouter from extensions Runtime API

extensions/browser/api/runtime/runtime_event_router.h

+// 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.
+
+#ifndef EXTENSIONS_BROWSER_API_RUNTIME_RUNTIME_EVENT_ROUTER_H_
+#define EXTENSIONS_BROWSER_API_RUNTIME_RUNTIME_EVENT_ROUTER_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "chrome/common/extensions/api/runtime.h"
+
+namespace base {
+class DictionaryValue;
+class Version;
+}
+
+namespace content {
+class BrowserContext;
+};
+
+namespace extensions {
+
+// Dispatches events to extensions such as onStartup, onInstalled, etc.
+class RuntimeEventRouter {
+ public:
+  // Dispatches the onStartup event to all currently-loaded extensions.
+  static void DispatchOnStartupEvent(content::BrowserContext* context,
+                                     const std::string& extension_id);
+
+  // Dispatches the onInstalled event to the given extension.
+  static void DispatchOnInstalledEvent(content::BrowserContext* context,
+                                       const std::string& extension_id,
+                                       const base::Version& old_version,
+                                       bool chrome_updated);
+
+  // Dispatches the onUpdateAvailable event to the given extension.
+  static void DispatchOnUpdateAvailableEvent(
+      content::BrowserContext* context,
+      const std::string& extension_id,
+      const base::DictionaryValue* manifest);
+
+  // Dispatches the onBrowserUpdateAvailable event to all extensions.
+  static void DispatchOnBrowserUpdateAvailableEvent(
+      content::BrowserContext* context);
+
+  // Dispatches the onRestartRequired event to the given app.
+  static void DispatchOnRestartRequiredEvent(
+      content::BrowserContext* context,
+      const std::string& app_id,
+      api::runtime::OnRestartRequired::Reason reason);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(RuntimeEventRouter);
+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_BROWSER_API_RUNTIME_RUNTIME_EVENT_ROUTER_H_