Enable the help page and the keyboard overlay to be shown with shortcut key on settings tab.

chrome/browser/resources/options/search_page.js

 // Copyright (c) 2011 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.
 
 cr.define('options', function() {
   const OptionsPage = options.OptionsPage;
 
   /**
    * Encapsulated handling of a search bubble.
    * @constructor
@@ skipping 527 matching lines @@
       switch(event.keyCode) {
         case ESCAPE_KEY_CODE:
           if (event.target == this.searchField) {
             this.setSearchText_('');
             this.searchField.blur();
             event.stopPropagation();
             event.preventDefault();
           }
           break;
         case FORWARD_SLASH_KEY_CODE:
-          if (!/INPUT|SELECT|BUTTON|TEXTAREA/.test(event.target.tagName)) {
+          if (!/INPUT|SELECT|BUTTON|TEXTAREA/.test(event.target.tagName) &&
+              !event.ctrlKey && !event.altKey) {
             this.searchField.focus();
             event.stopPropagation();
             event.preventDefault();
           }
           break;
       }
     },
   };
 
   /**
    * Standardizes a user-entered text query by removing extra whitespace.
    * @param {string} The user-entered text.
    * @return {string} The trimmed query.
    */
   SearchPage.canonicalizeQuery = function(text) {
     // Trim beginning and ending whitespace.
     return text.replace(/^\s+|\s+$/g, '');
   };
 
   // Export
   return {
     SearchPage: SearchPage
   };
 
 });