Remove hit weight experiment

chrome/browser/predictors/autocomplete_action_predictor.h

Index: chrome/browser/predictors/autocomplete_action_predictor.h
diff --git a/chrome/browser/predictors/autocomplete_action_predictor.h b/chrome/browser/predictors/autocomplete_action_predictor.h
index 8827b48946c6392870cce98462e46bf8c07b477f..42353fd93b172d6c5f21bfd99f3adbb50bb0a3a9 100644
--- a/chrome/browser/predictors/autocomplete_action_predictor.h
+++ b/chrome/browser/predictors/autocomplete_action_predictor.h
@@ -55,9 +55,6 @@ class AutocompleteActionPredictor
   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.
@@ -122,11 +119,6 @@ class AutocompleteActionPredictor
 
   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,