Don't send omnibox bounds for hidden field trials.

chrome/browser/instant/instant_field_trial.cc

 // 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.
 
 #include "chrome/browser/instant/instant_field_trial.h"
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "chrome/browser/metrics/metrics_service.h"
 #include "chrome/browser/prefs/pref_service.h"
@@ skipping 100 matching lines @@
   if (group == g_uma_control_a)
     return UMA_CONTROL_A;
   if (group == g_uma_control_b)
     return UMA_CONTROL_B;
 
   NOTREACHED();
   return INACTIVE;
 }
 
 // static
-bool InstantFieldTrial::IsExperimentGroup(Profile* profile) {
+bool InstantFieldTrial::IsInstantExperiment(Profile* profile) {
   Group group = GetGroup(profile);
   return group == INSTANT_EXPERIMENT_A || group == INSTANT_EXPERIMENT_B ||
          group == HIDDEN_EXPERIMENT_A || group == HIDDEN_EXPERIMENT_B ||
          group == SILENT_EXPERIMENT_A || group == SILENT_EXPERIMENT_B;
 }
 
 // static
 bool InstantFieldTrial::IsHiddenExperiment(Profile* profile) {
   Group group = GetGroup(profile);
-  return group == HIDDEN_EXPERIMENT_A || group == HIDDEN_EXPERIMENT_B;
+  return group == HIDDEN_EXPERIMENT_A || group == HIDDEN_EXPERIMENT_B ||
+         group == SILENT_EXPERIMENT_A || group == SILENT_EXPERIMENT_B;
 }
 
 // static
 bool InstantFieldTrial::IsSilentExperiment(Profile* profile) {
   Group group = GetGroup(profile);
   return group == SILENT_EXPERIMENT_A || group == SILENT_EXPERIMENT_B;
 }
 
 // static
 std::string InstantFieldTrial::GetGroupName(Profile* profile) {
@@ skipping 31 matching lines @@
 
     case UMA_CONTROL_A: return "ix=uca&";
     case UMA_CONTROL_B: return "ix=ucb&";
     case ALL_CONTROL_A: return "ix=aca&";
     case ALL_CONTROL_B: return "ix=acb&";
   }
 
   NOTREACHED();
   return std::string();
 }