Add PrerenderLocalPredictor, which will eventually perform

chrome/browser/history/history.h

Index: chrome/browser/history/history.h
===================================================================
--- chrome/browser/history/history.h	(revision 131579)
+++ chrome/browser/history/history.h	(working copy)
@@ -54,6 +54,7 @@
 class HistoryQueryTest;
 class VisitFilter;
 class URLDatabase;
+class VisitDatabaseObserver;
 }  // namespace history
 
 
@@ -596,6 +597,11 @@
   // history. We filter out some URLs such as JavaScript.
   static bool CanAddURL(const GURL& url);
 
+  // Adds or removes observers for the VisitDatabase.  Should be run in the

[cbentzel, 2012/04/17 20:28:16]

This is in the testing section, which is incorrect.

[tburkard, 2012/04/17 20:51:36]

Done.

+  // thread in which the observer would like to be notified.
+  void AddVisitDatabaseObserver(history::VisitDatabaseObserver* observer);
+  void RemoveVisitDatabaseObserver(history::VisitDatabaseObserver* observer);
+
  protected:
   virtual ~HistoryService();