Timeline: do not show percent columns in Events tree view

third_party/WebKit/Source/devtools/front_end/timeline/timelinePanel.css

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Anthony Ricaud <rik@webkit.org>
  *
  * 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.
@@ skipping 953 matching lines @@
 
 .timeline-tree-view .data-grid tr:hover td:not(.bottom-filler-td) {
     background-color: rgba(0, 0, 0, 0.1);
 }
 
 .timeline-tree-view .data-grid td.numeric-column {
     text-align: right;
     position: relative;
 }
 
-.timeline-tree-view .data-grid div.profile-multiple-values {
+.timeline-tree-view .data-grid div.background-percent-bar {
     float: right;
 }
 
 .timeline-tree-view .data-grid span.percent-column {
     color: #888;
     width: 44px;
     display: inline-block;
 }
 
 .timeline-tree-view .data-grid tr.selected span {
@@ skipping 53 matching lines @@
     border-bottom-color: transparent;
 }
 
 .timeline-tree-view .timeline-details-view-body .banner {
     background-color: inherit;
 }
 
 .timeline-details #filter-input-field {
     width: 120px;
 }