Remove call to IsInstantExtendedAPIGoogleSearchUrl from ToolbarModel.

chrome/browser/search_engines/prepopulated_engines_schema.json

 // Copyright (c) 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.
 
 // This file is used by json_to_struct.py to generate prepopulated_engine.h/cc.
 // Any time you modify this file regenerate the .h/.cc. See
 // prepopulated_engines.json for details.
 
 {
   "type_name": "PrepopulatedEngine",
@@ skipping 18 matching lines @@
     // A list of URL patterns that can be used, in addition to |search_url|,
     // to extract search terms from a URL.
     {
       "field": "alternate_urls",
       "type": "array",
       "contents": { "type": "string" },
       "optional": true
     },
     // A parameter that, if present in the query or ref parameters of a
     // search_url or instant_url, causes Chrome to replace the URL with the
-    // search term.
+    // search term. This can be {google:instantExtendedEnabledKey}.
     {
       "field": "search_terms_replacement_key",
       "type": "string",
       "optional": true
     },
     {
       "field": "type",
       "type": "enum",
       "ctype": "SearchEngineType",
       "default": "SEARCH_ENGINE_OTHER",
@@ skipping 12 matching lines @@
     // the future; in such a case the localized engines will transparently
     // replace the previous, non-localized versions.  For engines where we need
     // two instances to appear for one country (e.g. Bing Search U.S. English
     // and Spanish), we must use two different unique IDs (and different
     // keywords).
     //
     // See prepopulated_engines.json for the list of available IDs.
     { "field": "id", "type": "int" }
   ]
 }