Remove hit weight experiment

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_
 #pragma once
 
 #include <map>
 
@@ skipping 37 matching lines @@
   enum Action {
     ACTION_PRERENDER = 0,
     ACTION_PRECONNECT,
     ACTION_NONE,
     LAST_PREDICT_ACTION = ACTION_NONE
   };
 
   explicit AutocompleteActionPredictor(Profile* profile);
   virtual ~AutocompleteActionPredictor();
 
-  static void set_hit_weight(double weight) { hit_weight_ = weight; }
-  static double get_hit_weight() { return hit_weight_; }
-
   // Registers an AutocompleteResult for a given |user_text|. This will be used
   // when the user navigates from the Omnibox to determine early opportunities
   // to predict their actions.
   void RegisterTransitionalMatches(const string16& user_text,
                                    const AutocompleteResult& result);
 
   // Clears any transitional matches that have been registered. Called when, for
   // example, the AutocompleteEditModel is reverted.
   void ClearTransitionalMatches();
 
@@ skipping 44 matching lines @@
     int number_of_hits;
     int number_of_misses;
   };
 
   typedef std::map<DBCacheKey, DBCacheValue> DBCacheMap;
   typedef std::map<DBCacheKey, AutocompleteActionPredictorTable::Row::Id>
       DBIdCacheMap;
 
   static const int kMaximumDaysToKeepEntry;
 
-  // Multiplying factor applied to the |number_of_hits| for a database entry
-  // when calculating the confidence. It is currently set by a field trial so is
-  // static. Once the field trial ends, this will be a constant value.
-  static double hit_weight_;
-
   // NotificationObserver
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // Called when NOTIFICATION_OMNIBOX_OPENED_URL is observed.
   void OnOmniboxOpenedUrl(const AutocompleteLog& log);
 
   // Deletes any old or invalid entries from the local caches. |url_db| and
   // |id_list| must not be NULL. Every row id deleted will be added to id_list.
@@ skipping 52 matching lines @@
   DBIdCacheMap db_id_cache_;
 
   bool initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompleteActionPredictor);
 };
 
 }  // namespace predictors
 
 #endif  // CHROME_BROWSER_PREDICTORS_AUTOCOMPLETE_ACTION_PREDICTOR_H_