Add new UMA stats to get a handle on Downloads UI Usage

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 19421cb90262ceb252efe88686d340dca6376385..01fc656495746d47c0ec37e979f962151d16ba27 100644
--- a/chrome/browser/history/history_backend.h
+++ b/chrome/browser/history/history_backend.h
@@ -246,7 +246,8 @@ class HistoryBackend : public base::RefCountedThreadSafe<HistoryBackend>,
   void GetNextDownloadId(scoped_refptr<DownloadNextIdRequest> request);
   void QueryDownloads(scoped_refptr<DownloadQueryRequest> request);
   void CleanUpInProgressEntries();
-  void UpdateDownload(int64 received_bytes, int32 state, int64 db_handle);
+  void UpdateDownload(int64 received_bytes, int32 state,
+                      const base::Time& end_time, int64 db_handle);
   void UpdateDownloadPath(const FilePath& path, int64 db_handle);
   void CreateDownload(scoped_refptr<DownloadCreateRequest> request,
                       int32 id,
@@ -254,7 +255,8 @@ class HistoryBackend : public base::RefCountedThreadSafe<HistoryBackend>,
   void RemoveDownload(int64 db_handle);
   void RemoveDownloadsBetween(const base::Time remove_begin,
                               const base::Time remove_end);
-  void RemoveDownloads(const base::Time remove_end);
+  void RRemoveDownloademoveDownloads(const base::Time remove_end);

[Randy Smith (Not in Mondays), 2011/09/26 18:27:26]

???

[benjhayden, 2011/09/28 17:35:23]

Done.

+  void MarkDownloadOpened(int64 db_handle);
 
   // Segment usage -------------------------------------------------------------