Don't send omnibox bounds for hidden field trials.

chrome/browser/instant/instant_field_trial.h

 // Copyright (c) 2011 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_INSTANT_INSTANT_FIELD_TRIAL_H_
 #define CHROME_BROWSER_INSTANT_INSTANT_FIELD_TRIAL_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 51 matching lines @@
     ALL_CONTROL_B,
   };
 
   // Activate the field trial. Before this call, all calls to GetGroup will
   // return INACTIVE. *** MUST NOT BE CALLED MORE THAN ONCE. ***
   static void Activate();
 
   // Return the field trial group this profile belongs to.
   static Group GetGroup(Profile* profile);
 
-  // Check if the user is in one of the EXPERIMENT groups.
-  static bool IsExperimentGroup(Profile* profile);
+  // Check if the user is in any of the EXPERIMENT groups.
+  static bool IsInstantExperiment(Profile* profile);
 
-  // Check if the user is in the HIDDEN_EXPERIMENT group.
+  // Check if the user is in the HIDDEN or SILENT EXPERIMENT groups.
   static bool IsHiddenExperiment(Profile* profile);
 
   // Check if the user is in the SILENT EXPERIMENT group.
   static bool IsSilentExperiment(Profile* profile);
 
   // Returns a string describing the user's group. Can be added to histogram
   // names, to split histograms by field trial groups.
   static std::string GetGroupName(Profile* profile);
 
  // Returns a string denoting the user's group, for adding as a URL param.
  static std::string GetGroupAsUrlParam(Profile* profile);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(InstantFieldTrial);
 };
 
 #endif  // CHROME_BROWSER_INSTANT_INSTANT_FIELD_TRIAL_H_