Add UMA metrics and histograms for locally managed users.

chrome/browser/history/url_database.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_HISTORY_URL_DATABASE_H_
 #define CHROME_BROWSER_HISTORY_URL_DATABASE_H_
 
 #include "base/basictypes.h"
 #include "chrome/browser/history/history_types.h"
 #include "chrome/browser/search_engines/template_url_id.h"
@@ skipping 36 matching lines @@
   // also probably return a string instead since that is what the DB uses
   // internally and we can avoid the extra conversion.
   static std::string GURLToDatabaseURL(const GURL& url);
 
   // URL table functions -------------------------------------------------------
 
   // Looks up a url given an id. Fills info with the data. Returns true on
   // success and false otherwise.
   bool GetURLRow(URLID url_id, URLRow* info);
 
-  // Looks up all urls that were typed in manually. Fills info with the data.
+  // Looks up all urls that were typed in manually. Fills urls with the data.
   // Returns true on success and false otherwise.
   bool GetAllTypedUrls(URLRows* urls);
 
+  // Looks up all unique URLs whose last visit times fall within the given
+  // range. Fills urls with the data. Returns true on success and false
+  // otherwise.
+  bool GetUniqueURLsInRange(base::Time begin_time, base::Time end_time,
+                            int max_results, URLRows* urls);
+
   // Looks up the given URL and if it exists, fills the given pointers with the
   // associated info and returns the ID of that URL. If the info pointer is
   // NULL, no information about the URL will be filled in, only the ID will be
   // returned. Returns 0 if the URL was not found.
   URLID GetRowForURL(const GURL& url, URLRow* info);
 
   // Given an already-existing row in the URL table, updates that URL's stats.
   // This can not change the URL.  Returns true on success.
   //
   // This will NOT update the title used for full text indexing. If you are
@@ skipping 228 matching lines @@
 // the macro if you want to put this in the middle of an otherwise constant
 // string, it will save time doing string appends. If you have to build a SQL
 // string dynamically anyway, use the constant, it will save space.
 #define HISTORY_URL_ROW_FIELDS \
     " urls.id, urls.url, urls.title, urls.visit_count, urls.typed_count, " \
     "urls.last_visit_time, urls.hidden "
 
 }  // history
 
 #endif  // CHROME_BROWSER_HISTORY_URL_DATABASE_H_