DevTools: Move checkbox title element into Shadow DOM

third_party/WebKit/Source/devtools/front_end/ui/UIUtils.js

 /*
  * Copyright (C) 2011 Google Inc.  All rights reserved.
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
@@ skipping 1269 matching lines @@
 /**
  * @param {string=} title
  * @param {boolean=} checked
  * @param {string=} subtitle
  * @return {!Element}
  */
 UI.createCheckboxLabel = function(title, checked, subtitle) {
   var element = createElement('label', 'dt-checkbox');
   element.checkboxElement.checked = !!checked;
   if (title !== undefined) {
-    element.textElement = element.createChild('div', 'dt-checkbox-text');
+    element.textElement = element.shadowRoot.createChild('div', 'dt-checkbox-text');
     element.textElement.textContent = title;
     if (subtitle !== undefined) {
       element.subtitleElement = element.textElement.createChild('div', 'dt-checkbox-subtitle');
       element.subtitleElement.textContent = subtitle;
     }
   }
   return element;
 };
 
 /**
@@ skipping 730 matching lines @@
     callback(fileSelectorElement.files[0]);
   }
   return fileSelectorElement;
 };
 
 /**
  * @const
  * @type {number}
  */
 UI.MaxLengthForDisplayedURLs = 150;