Remove a variety of no-longer-used query params.

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 GetMostVisitedItemData();
       native function GetQuery();
       native function GetSearchRequestParams();
       native function GetRightToLeft();
-      native function GetStartMargin();
       native function GetSuggestionToPrefetch();
       native function IsFocused();
       native function IsKeyCaptureEnabled();
       native function Paste();
       native function StartCapturingKeyStrokes();
       native function StopCapturingKeyStrokes();
 
       // =======================================================================
       //                           Exported functions
       // =======================================================================
       this.__defineGetter__('displayInstantResults', GetDisplayInstantResults);
       this.__defineGetter__('isFocused', IsFocused);
       this.__defineGetter__('isKeyCaptureEnabled', IsKeyCaptureEnabled);
       this.__defineGetter__('rtl', GetRightToLeft);
-      this.__defineGetter__('startMargin', GetStartMargin);
       this.__defineGetter__('suggestion', GetSuggestionToPrefetch);
       this.__defineGetter__('value', GetQuery);
       Object.defineProperty(this, 'requestParams',
                             { get: GetSearchRequestParams });
 
       this.focus = function() {
         Focus();
       };
 
       // This method is restricted to chrome-search://most-visited pages by
@@ skipping 23 matching lines @@
       this.startCapturingKeyStrokes = function() {
         StartCapturingKeyStrokes();
       };
 
       this.stopCapturingKeyStrokes = function() {
         StopCapturingKeyStrokes();
       };
 
       this.onfocuschange = null;
       this.onkeycapturechange = null;
-      this.onmarginchange = null;
       this.onsubmit = null;
       this.onsuggestionchange = null;
 
       //TODO(jered): Remove this empty method when google no longer requires it.
       this.setRestrictedValue = function() {};
     };
 
     this.newTabPage = new function() {
 
       // =======================================================================
@@ skipping 105 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;
   };
 }