Eliminate NOTIFICATION_HISTORY_LOADED notification

components/history/core/browser/history_service_observer.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 COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_SERVICE_OBSERVER_H_
+#define COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_SERVICE_OBSERVER_H_
+
+class HistoryService;
+
+namespace history {
+
+// Interface for observing notifications from HistoryService.
+class HistoryServiceObserver {

[sdefresne, 2014/09/23 08:45:10]

This class need to have a virtual destructor.

[sdefresne, 2014/10/20 13:15:43]

This class has already been added, please rebase.

+ public:
+  // Is called to notify when a history service has finished loading.
+  virtual void HistoryServiceLoaded(HistoryService* service) = 0;

[sdefresne, 2014/09/23 08:45:10]

Use DISALLOW_COPY_AND_ASSIGN to disallow copying and assignation.

+};
+
+}  // namespace history
+
+#endif  // COMPONENTS_HISTORY_CORE_BROWSER_HISTORY_SERVICE_OBSERVER_H_