Delay predictor DB access until after the first main frame load complete.

chrome/browser/predictors/autocomplete_action_predictor.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_PREDICTORS_AUTOCOMPLETE_ACTION_PREDICTOR_H_
 #define CHROME_BROWSER_PREDICTORS_AUTOCOMPLETE_ACTION_PREDICTOR_H_
 
 #include <map>
 
 #include "base/gtest_prod_util.h"
@@ skipping 133 matching lines @@
   typedef std::map<DBCacheKey, AutocompleteActionPredictorTable::Row::Id>
       DBIdCacheMap;
 
   static const int kMaximumDaysToKeepEntry;
 
   // NotificationObserver
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
+  // The first step in initializing the predictor is accessing the database and
+  // building the local cache. This should be delayed until after critical DB
+  // and IO processes have completed.
+  void CreateLocalCachesFromDatabase();
+
   // Removes all rows from the database and caches.
   void DeleteAllRows();
 
   // Removes rows from the database and caches that contain a URL in |rows|.
   void DeleteRowsWithURLs(const history::URLRows& rows);
 
   // Called when NOTIFICATION_OMNIBOX_OPENED_URL is observed.
   void OnOmniboxOpenedUrl(const AutocompleteLog& log);
 
   // Adds and updates rows in the database and caches.
@@ skipping 69 matching lines @@
   DBIdCacheMap db_id_cache_;
 
   bool initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompleteActionPredictor);
 };
 
 }  // namespace predictors
 
 #endif  // CHROME_BROWSER_PREDICTORS_AUTOCOMPLETE_ACTION_PREDICTOR_H_