Prevent querying of restricted query values.

chrome/renderer/resources/extensions/searchbox_api.js

 // Copyright 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.
 
 var chrome;
 if (!chrome)
   chrome = {};
 
 if (!chrome.embeddedSearch) {
   chrome.embeddedSearch = new function() {
@@ skipping 230 matching lines @@
       };
       this.setAutocompleteText = function(text, behavior) {
         SetQuerySuggestion(text, behavior);
       };
       this.setRestrictedAutocompleteText = function(autocompleteResultId) {
         SetQuerySuggestionFromAutocompleteResult(autocompleteResultId);
       };
       this.setValue = function(text, type) {
         SetQuery(text, type);
       };
+      // Must access nativeSuggestions before calling setRestrictedValue.
       this.setRestrictedValue = function(autocompleteResultId) {
         SetQueryFromAutocompleteResult(autocompleteResultId);
       };
       // TODO(jered): Remove the deprecated "reason" argument.
       this.showOverlay = function(reason, height) {
         ShowOverlay(reason, height);
       };
       // TODO(jered): Remove this when GWS knows about showOverlay().
       this.show = this.showOverlay;
       this.markDuplicateSuggestions = function(clientSuggestions) {
@@ skipping 84 matching lines @@
 
       this.onmostvisitedchange = null;
       this.onthemechange = null;
     };
 
     // Export legacy searchbox API.
     // TODO: Remove this when Instant Extended is fully launched.
     chrome.searchBox = this.searchBox;
   };
 }