Don't send omnibox bounds for hidden field trials.

chrome/browser/instant/instant_field_trial.cc

Index: chrome/browser/instant/instant_field_trial.cc
diff --git a/chrome/browser/instant/instant_field_trial.cc b/chrome/browser/instant/instant_field_trial.cc
index 0e1c5d2b313e6ec8c505c7c9900828af6e786298..66b51e671f34ad26d55b299937b9132d01e5af62 100644
--- a/chrome/browser/instant/instant_field_trial.cc
+++ b/chrome/browser/instant/instant_field_trial.cc
@@ -118,7 +118,7 @@ InstantFieldTrial::Group InstantFieldTrial::GetGroup(Profile* profile) {
 }
 
 // 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 ||
@@ -128,7 +128,8 @@ bool InstantFieldTrial::IsExperimentGroup(Profile* profile) {
 // 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