Add Search-. as a shortcut for the Insert key when Search is acting as a Function key.

chrome/browser/resources/chromeos/keyboard_overlay.js

 // 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.
 
 <include src="keyboard_overlay_data.js"/>
 <include src="keyboard_overlay_accessibility_helper.js"/>
 
 var BASE_KEYBOARD = {
   top: 0,
   left: 0,
@@ skipping 141 matching lines @@
       '7<>SEARCH': 'keyboardOverlayF7',
       '8<>SEARCH': 'keyboardOverlayF8',
       '9<>SEARCH': 'keyboardOverlayF9',
       '0<>SEARCH': 'keyboardOverlayF10',
       '-<>SEARCH': 'keyboardOverlayF11',
       '=<>SEARCH': 'keyboardOverlayF12',
       'backspace<>SEARCH': 'keyboardOverlayDelete',
       'down<>SEARCH': 'keyboardOverlayPageDown',
       'right<>SEARCH': 'keyboardOverlayEnd',
       'up<>SEARCH': 'keyboardOverlayPageUp',
-      'left<>SEARCH': 'keyboardOverlayHome'
+      'left<>SEARCH': 'keyboardOverlayHome',
+      '.<>SEARCH': 'keyboardOverlayInsert'
     };
 
     for (var key in searchModifierRemoveShortcuts)
       delete shortcutDataCache[key];
     for (var key in searchModifierAddShortcuts)
       shortcutDataCache[key] = searchModifierAddShortcuts[key];
   }
 
   return shortcutDataCache;
 }
@@ skipping 488 matching lines @@
  * Handles click events of the learn more link.
  * @param {Event} e Mouse click event.
  */
 function learnMoreClicked(e) {
   chrome.send('openLearnMorePage');
   chrome.send('DialogClose');
   e.preventDefault();
 }
 
 document.addEventListener('DOMContentLoaded', init);