[DO NOT LAND] For Konrad: classes pane widget

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

Index: third_party/WebKit/Source/devtools/front_end/sdk/DOMModel.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/DOMModel.js b/third_party/WebKit/Source/devtools/front_end/sdk/DOMModel.js
index b6d4378f881608d8dfd771da4ddf8d60ced25743..ecbd33d055ddfa72743548e6b7c302064d0f5dd4 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/DOMModel.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/DOMModel.js
@@ -414,6 +414,15 @@ SDK.DOMNode = class extends SDK.SDKObject {
   }
 
   /**
+   * @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() {