Rename VisitDatabaseObserver to HistoryServiceObserver

chrome/browser/history/history_backend_unittest.cc

Index: chrome/browser/history/history_backend_unittest.cc
diff --git a/chrome/browser/history/history_backend_unittest.cc b/chrome/browser/history/history_backend_unittest.cc
index 2f581f17db1857e153dbe2dd58ec3088ba220a35..cc0ddc2ba6be53ddec5463fb67445607a427bbcf 100644
--- a/chrome/browser/history/history_backend_unittest.cc
+++ b/chrome/browser/history/history_backend_unittest.cc
@@ -92,13 +92,12 @@ class HistoryBackendTestDelegate : public HistoryBackend::Delegate {
   virtual void NotifyProfileError(sql::InitStatus init_status) override {}
   virtual void SetInMemoryBackend(
       scoped_ptr<InMemoryHistoryBackend> backend) override;
+  virtual void NotifyAddVisit(const BriefVisitInfo& info) override {}
   virtual void NotifyFaviconChanged(const std::set<GURL>& urls) override;
   virtual void BroadcastNotifications(
       int type,
       scoped_ptr<HistoryDetails> details) override;
   virtual void DBLoaded() override;
-  virtual void NotifyVisitDBObserversOnAddVisit(
-      const BriefVisitInfo& info) override {}
 
  private:
   // Not owned by us.