InstantExtended: add back focus() API call.

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() {
     this.searchBox = new function() {
 
       // =======================================================================
       //                            Private functions
       // =======================================================================
+      native function Focus();
       native function GetDisplayInstantResults();
       native function GetFont();
       native function GetFontSize();
       native function GetMostVisitedItemData();
       native function GetQuery();
       native function GetRightToLeft();
       native function GetStartMargin();
       native function GetSuggestionToPrefetch();
       native function IsFocused();
       native function IsKeyCaptureEnabled();
       native function Paste();
       native function SetVoiceSearchSupported();
       native function StartCapturingKeyStrokes();
       native function StopCapturingKeyStrokes();
 
       // =======================================================================
       //                           Exported functions
       // =======================================================================
       this.__defineGetter__('displayInstantResults', GetDisplayInstantResults);
       this.__defineGetter__('font', GetFont);
       this.__defineGetter__('fontSize', GetFontSize);
       this.__defineGetter__('isFocused', IsFocused);
       this.__defineGetter__('isKeyCaptureEnabled', IsKeyCaptureEnabled);
       this.__defineGetter__('rtl', GetRightToLeft);
       this.__defineGetter__('startMargin', GetStartMargin);
       this.__defineGetter__('suggestion', GetSuggestionToPrefetch);
       this.__defineGetter__('value', GetQuery);
 
+      this.focus = function() {
+        Focus();
+      };
+
       // This method is restricted to chrome-search://most-visited pages by
       // checking the invoking context's origin in searchbox_extension.cc.
       this.getMostVisitedItemData = function(restrictedId) {
         return GetMostVisitedItemData(restrictedId);
       };
 
       this.paste = function(value) {
         Paste(value);
       };
 
@@ skipping 89 matching lines @@
       this.oninputcancel = null;
       this.oninputstart = null;
       this.onmostvisitedchange = null;
       this.onthemechange = null;
     };
 
     // TODO(jered): Remove when google no longer expects this object.
     chrome.searchBox = this.searchBox;
   };
 }