DevTools: use shorthand syntax in interface definitions.

third_party/WebKit/Source/devtools/front_end/source_frame/SourcesTextEditor.js

 // Copyright (c) 2016 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.
 /**
  * @unrestricted
  */
 SourceFrame.SourcesTextEditor = class extends TextEditor.CodeMirrorTextEditor {
   /**
    * @param {!SourceFrame.SourcesTextEditorDelegate} delegate
    */
@@ skipping 613 matching lines @@
 /**
  * @interface
  */
 SourceFrame.SourcesTextEditorDelegate = function() {};
 SourceFrame.SourcesTextEditorDelegate.prototype = {
   /**
    * @param {!UI.ContextMenu} contextMenu
    * @param {number} lineNumber
    * @return {!Promise}
    */
-  populateLineGutterContextMenu: function(contextMenu, lineNumber) {},
+  populateLineGutterContextMenu(contextMenu, lineNumber) {},
 
   /**
    * @param {!UI.ContextMenu} contextMenu
    * @param {number} lineNumber
    * @param {number} columnNumber
    * @return {!Promise}
    */
-  populateTextAreaContextMenu: function(contextMenu, lineNumber, columnNumber) {},
+  populateTextAreaContextMenu(contextMenu, lineNumber, columnNumber) {},
 };
 
 /**
  * @param {!CodeMirror} codeMirror
  */
 CodeMirror.commands.smartNewlineAndIndent = function(codeMirror) {
   codeMirror.operation(innerSmartNewlineAndIndent.bind(null, codeMirror));
   function innerSmartNewlineAndIndent(codeMirror) {
     var selections = codeMirror.listSelections();
     var replacements = [];
@@ skipping 249 matching lines @@
    */
   _setHighlighter(highlighter, selectionStart) {
     var overlayMode = {token: highlighter};
     this._codeMirror.addOverlay(overlayMode);
     this._highlightDescriptor = {overlay: overlayMode, selectionStart: selectionStart};
   }
 };
 
 SourceFrame.SourcesTextEditor.LinesToScanForIndentationGuessing = 1000;
 SourceFrame.SourcesTextEditor.MaximumNumberOfWhitespacesPerSingleSpan = 16;