Removes some dead database code

chrome/browser/history/history_service.h

Index: chrome/browser/history/history_service.h
diff --git a/chrome/browser/history/history_service.h b/chrome/browser/history/history_service.h
index 290b4a7ab7adefdc4f5f4f408cd2a5a211a3450c..40e1df5c028a8e5c9cfc065d072e6d99f913a60d 100644
--- a/chrome/browser/history/history_service.h
+++ b/chrome/browser/history/history_service.h
@@ -470,17 +470,6 @@ class HistoryService : public CancelableRequestProvider,
                                 int max_result_count,
                                 const SegmentQueryCallback& callback);
 
-  // Increases the amount of time the user actively viewed the url.
-  void IncreaseSegmentDuration(const GURL& url,
-                               base::Time time,
-                               base::TimeDelta delta);
-
-  // Queries segments based on active time viewed.
-  Handle QuerySegmentDurationSince(CancelableRequestConsumerBase* consumer,
-                                   base::Time from_time,
-                                   int max_result_count,
-                                   const SegmentQueryCallback& callback);
-
   // Keyword search terms -----------------------------------------------------
 
   // Sets the search terms for the specified url and keyword. url_id gives the