Get rid of |get x(x)| pattern in tracing/

chrome/browser/resources/tracing/timeline_track.js

 // Copyright (c) 2012 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.
 
 
 /**
  * @fileoverview Renders an array of slices into the provided div,
  * using a child canvas element. Uses a FastRectRenderer to draw only
  * the visible slices.
  */
@@ skipping 105 matching lines @@
    * @constructor
    */
   var TimelineThreadTrack = cr.ui.define(TimelineContainerTrack);
   TimelineThreadTrack.prototype = {
     __proto__: TimelineContainerTrack.prototype,
 
     decorate: function() {
       this.classList.add('timeline-thread-track');
     },
 
-    get thread(thread) {
+    get thread() {
       return this.thread_;
     },
 
     set thread(thread) {
       this.thread_ = thread;
       this.updateChildTracks_();
     },
 
     get tooltip() {
       return this.tooltip_;
@@ skipping 68 matching lines @@
    * @constructor
    */
   var TimelineCpuTrack = cr.ui.define(TimelineContainerTrack);
   TimelineCpuTrack.prototype = {
     __proto__: TimelineContainerTrack.prototype,
 
     decorate: function() {
       this.classList.add('timeline-thread-track');
     },
 
-    get cpu(cpu) {
+    get cpu() {
       return this.cpu_;
     },
 
     set cpu(cpu) {
       this.cpu_ = cpu;
       this.updateChildTracks_();
     },
 
     get tooltip() {
       return this.tooltip_;
@@ skipping 747 matching lines @@
   };
 
   return {
     TimelineCounterTrack: TimelineCounterTrack,
     TimelineSliceTrack: TimelineSliceTrack,
     TimelineThreadTrack: TimelineThreadTrack,
     TimelineViewportTrack: TimelineViewportTrack,
     TimelineCpuTrack: TimelineCpuTrack
   };
 });