Don't set ion=1 for hidden Instant modes.

chrome/browser/search_engines/template_url.cc

Index: chrome/browser/search_engines/template_url.cc
diff --git a/chrome/browser/search_engines/template_url.cc b/chrome/browser/search_engines/template_url.cc
index 404a065a4abc7163f0d1ff647602fff0de2683d6..0b00d1b9c8cd240c4b21bfc1d856cde9a5223c0f 100644
--- a/chrome/browser/search_engines/template_url.cc
+++ b/chrome/browser/search_engines/template_url.cc
@@ -56,6 +56,8 @@ static const char kGoogleBaseSuggestURLParameter[] =
     "google:baseSuggestURL";
 static const char kGoogleBaseSuggestURLParameterFull[] =
     "{google:baseSuggestURL}";
+static const char kGoogleInstantEnabledParameter[] =
+    "google:instantEnabledParameter";
 static const char kGoogleInstantFieldTrialGroupParameter[] =
     "google:instantFieldTrialGroupParameter";
 static const char kGoogleOriginalQueryForSuggestionParameter[] =
@@ -152,6 +154,8 @@ bool TemplateURLRef::ParseParameter(size_t start,
     replacements->push_back(Replacement(GOOGLE_BASE_URL, start));
   } else if (parameter == kGoogleBaseSuggestURLParameter) {
     replacements->push_back(Replacement(GOOGLE_BASE_SUGGEST_URL, start));
+  } else if (parameter == kGoogleInstantEnabledParameter) {
+    replacements->push_back(Replacement(GOOGLE_INSTANT_ENABLED, start));
   } else if (parameter == kGoogleInstantFieldTrialGroupParameter) {
     replacements->push_back(Replacement(GOOGLE_INSTANT_FIELD_TRIAL_GROUP,
                                         start));
@@ -392,6 +396,10 @@ std::string TemplateURLRef::ReplaceSearchTermsUsingTermsData(
         url.insert(i->index, search_terms_data.GoogleBaseSuggestURLValue());
         break;
 
+      case GOOGLE_INSTANT_ENABLED:
+        url.insert(i->index, search_terms_data.InstantEnabledParam());
+        break;
+
       case GOOGLE_INSTANT_FIELD_TRIAL_GROUP:
         url.insert(i->index, search_terms_data.InstantFieldTrialUrlParam());
         break;