Untyped intranet URL check should examine the start and end of a redirect chain.

components/history/core/browser/history_backend.h

Index: components/history/core/browser/history_backend.h
diff --git a/components/history/core/browser/history_backend.h b/components/history/core/browser/history_backend.h
index 2a62a79deccf02c0276c3ab2b043e86708491a9f..026d1f3e4175f67b19ec3515853487b7affdfa7b 100644
--- a/components/history/core/browser/history_backend.h
+++ b/components/history/core/browser/history_backend.h
@@ -606,9 +606,12 @@ class HistoryBackend : public base::RefCountedThreadSafe<HistoryBackend>,
   // at |cur_visit|.
   void GetRedirectsToSpecificVisit(VisitID cur_visit, RedirectList* redirects);
 
-  // Update the visit_duration information in visits table.
+  // Updates the visit_duration information in visits table.
   void UpdateVisitDuration(VisitID visit_id, const base::Time end_ts);
 
+  // Returns whether |url| is on an untyped intranet host.
+  bool IsUntypedIntranetHost(const GURL& url);
+
   // Querying ------------------------------------------------------------------
 
   // Backends for QueryHistory. *Basic() handles queries that are not