Refactor sending NOTIFICATION_HISTORY_URL_VISITED

components/history/core/browser/history_service_observer.cc

Index: components/history/core/browser/history_service_observer.cc
diff --git a/components/history/core/browser/history_service_observer.cc b/components/history/core/browser/history_service_observer.cc
new file mode 100644
index 0000000000000000000000000000000000000000..45ca6853a0ab91d6da3627c252acadbe67f71e76
--- /dev/null
+++ b/components/history/core/browser/history_service_observer.cc
@@ -0,0 +1,15 @@
+// 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.
+
+#include "components/history/core/browser/history_service_observer.h"
+
+namespace history {
+
+HistoryServiceObserver::HistoryServiceObserver() {
+}
+
+HistoryServiceObserver::~HistoryServiceObserver() {
+}
+
+}  // namespace history