Omnibox: Add Field Trial to Make Shortcuts More Aggressive

chrome/browser/omnibox/omnibox_field_trial.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_OMNIBOX_OMNIBOX_FIELD_TRIAL_H_
 #define CHROME_BROWSER_OMNIBOX_OMNIBOX_FIELD_TRIAL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 79 matching lines @@
   static bool InStopTimerFieldTrialExperimentGroup();
 
   // ---------------------------------------------------------
   // For the ZeroSuggestProvider field trial.
 
   // Returns whether the user is in any field trial where the
   // ZeroSuggestProvider should be used to get suggestions when the
   // user clicks on the omnibox but has not typed anything yet.
   static bool InZeroSuggestFieldTrial();
 
+  // ---------------------------------------------------------
+  // For the ShortcutsScoring field trial.
+
+  // If the field trial is active and the user is in an experiment
+  // group, extract from the experiment group name the maximum
+  // relevance score ShortcutsProvider:: CalculateScore() can return.
+  // Returns true on a successful extraction.  If the extraction failed,
+  // if the field trial is not active, etc., returns false.
+  // CalculateScore()'s return value is a product of this maximum
+  // relevance score and some attenuating factors that are all between
+  // 0 and 1.  (Note that Shortcuts results may have their scores
+  // reduced later if the assigned score is higher than allowed for
+  // non-inlineable results.  Shortcuts results are not allowed to be
+  // inlined.)
+  static bool ShortcutsScoringMaxRelevance(int* max_relevance);
+
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(OmniboxFieldTrial);
 };
 
 #endif  // CHROME_BROWSER_OMNIBOX_OMNIBOX_FIELD_TRIAL_H_