Implemented completion pings for component updates.

chrome/browser/component_updater/component_updater_service_observer.h

+// Copyright (c) 2013 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 CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_UPDATER_SERVICE_OBSERVER_H_
+#define CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_UPDATER_SERVICE_OBSERVER_H_
+
+#include "base/basictypes.h"
+#include "chrome/browser/component_updater/component_updater_service.h"
+
+struct CrxUpdateItem;
+
+namespace component_updater {
+
+enum Events {
+  // The update has completed, with success or with an error.
+  kEventUpdateComplete,
+};
+
+// Provides an event sink for the ComponentUpdaterService.
+class ComponentUpdaterServiceObserver {
+ public:
+  explicit ComponentUpdaterServiceObserver(
+      ComponentUpdateService::Configurator* config);
+  ~ComponentUpdaterServiceObserver();
+
+  void OnEvent(Events event, const CrxUpdateItem* item);
+
+ private:
+  ComponentUpdateService::Configurator* config_;
+
+  DISALLOW_COPY_AND_ASSIGN(ComponentUpdaterServiceObserver);
+};
+
+}  // namespace component_updater
+
+#endif  // CHROME_BROWSER_COMPONENT_UPDATER_COMPONENT_UPDATER_SERVICE_OBSERVER_H_
+