Omnibox: Call Stop() on all Providers After Certain Amount of Time

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 90 matching lines @@
   static bool InHQPReplaceHUPScoringFieldTrial();
 
   // Returns whether the user should get the experimental setup or the
   // default setup for this field trial.  The experiment group
   // simultaneously disables HistoryURL provider from searching the
   // URL database and directs HistoryQuick provider to calculate both
   // HUP-style and HQP-style scores for matches, then return whichever
   // is larger.
   static bool InHQPReplaceHUPScoringFieldTrialExperimentGroup();
 
+  // ---------------------------------------------------------
+  // For the AutocompleteController "stop timer" field trial.
+
+  // Returns whether the user should get the experimental setup or the
+  // default setup for this field trial.  The experiment group uses
+  // a timer in AutocompleteController to tell the providers to stop
+  // looking for matches after too much time has passed.  In other words,
+  // it tries to tell the providers to stop updating the list of suggested
+  // matches if updating the matches would probably be disruptive because
+  // they're arriving so late.
+  static bool InStopTimerFieldTrialExperimentGroup();
+
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(OmniboxFieldTrial);
 };
 
 #endif  // CHROME_BROWSER_OMNIBOX_OMNIBOX_FIELD_TRIAL_H_