Changes to add duration into history database.

chrome/browser/history/history_backend.h

Index: chrome/browser/history/history_backend.h
diff --git a/chrome/browser/history/history_backend.h b/chrome/browser/history/history_backend.h
index 90d29fc07885e4efd0814fe74bb23674aa07a2db..05a3c626cfead2d35bbe7f9e5e45cda79e5faf44 100644
--- a/chrome/browser/history/history_backend.h
+++ b/chrome/browser/history/history_backend.h
@@ -135,6 +135,11 @@ class HistoryBackend : public base::RefCountedThreadSafe<HistoryBackend>,
   void AddPage(scoped_refptr<HistoryAddPageArgs> request);
   virtual void SetPageTitle(const GURL& url, const string16& title);
   void AddPageNoVisitForBookmark(const GURL& url);
+  void UpdatePageInfo(const void* host,

[GeorgeY, 2012/03/22 00:36:49]

The same problem with comments and const void*
There should be *no* raw pointers going on between the threads: if it is a
meaningful pointer wrap it up into smart_..., if it is an object - use object
instead.
EDIT: I looked at the code and *this* use for const void* is OK, but, please,
comment the same way it is commented elsewhere in the file.

[Wei Li, 2012/03/22 20:05:38]

Done.

+                      int32 page_id,
+                      const GURL& url,
+                      const base::Time end_ts);
+
 
   // Indexing ------------------------------------------------------------------
 
@@ -391,8 +396,8 @@ class HistoryBackend : public base::RefCountedThreadSafe<HistoryBackend>,
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, GetFaviconForURL);
   FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest,
                            CloneFaviconIsRestrictedToSameDomain);
-  FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest,
-                           QueryFilteredURLs);
+  FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, QueryFilteredURLs);
+  FRIEND_TEST_ALL_PREFIXES(HistoryBackendTest, UpdateVisitDetails);
 
   friend class ::TestingProfile;
 
@@ -435,6 +440,9 @@ class HistoryBackend : public base::RefCountedThreadSafe<HistoryBackend>,
   void GetRedirectsToSpecificVisit(
       VisitID cur_visit, history::RedirectList* redirects);
 
+  // Update the visit details information.
+  void UpdateVisitDetails(VisitID visit_id, const base::Time end_ts);
+
   // Thumbnail Helpers ---------------------------------------------------------
 
   // When a simple GetMostRecentRedirectsFrom() fails, this method is