ClassesPaneWidget - Add ability to quickly preview autocompleted CSS classes.

third_party/WebKit/Source/devtools/front_end/sdk/DOMModel.js

 /*
  * Copyright (C) 2009, 2010 Google Inc. All rights reserved.
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
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   /**
    * @param {string} name
    * @param {string} value
    * @param {function(?Protocol.Error)=} callback
    */
   setAttributeValue(name, value, callback) {
     this._agent.setAttributeValue(this.id, name, value, this._domModel._markRevision(this, callback));
   }
 
   /**
+  * @param {string} name
+  * @param {string} value
+  * @return {!Promise<?Protocol.Error>}
+  */
+  setAttributeValuePromise(name, value) {
+    return new Promise(fulfill => this.setAttributeValue(name, value, fulfill));
+  }
+
+  /**
    * @return {!Array<!SDK.DOMNode.Attribute>}
    */
   attributes() {
     return this._attributes;
   }
 
   /**
    * @param {string} name
    * @param {function(?Protocol.Error)=} callback
    */
@@ skipping 1718 matching lines @@
   /**
    * @override
    * @param {!Protocol.Page.FrameId} frameId
    */
   highlightFrame(frameId) {
     this._agent.highlightFrame(
         frameId, Common.Color.PageHighlight.Content.toProtocolRGBA(),
         Common.Color.PageHighlight.ContentOutline.toProtocolRGBA());
   }
 };