[DevTools] Turn links into spans to prevent default behavior.

third_party/WebKit/Source/devtools/front_end/sources/UIList.js

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 209 matching lines @@
   /**
    * @param {?string} title
    * @param {?function(!Event):!Promise} handler
    */
   setAction(title, handler) {
     if (this._actionElement)
       this._actionElement.remove();
     if (!title || !handler)
       return;
     this._actionElement = this.element.createChild('div', 'action');
-    var link = this._actionElement.createChild('a', 'action-link');
+    var link = this._actionElement.createChild('span', 'action-link');
     link.textContent = title;
     link.addEventListener('click', (event) => {
       link.disabled = true;
       handler(event).then(() => link.disabled = false);
       event.stopPropagation();
     });
   }
 };