[WebUI] Fix rest of CSS style nits so I can turn on CSS checker.

chrome/browser/resources/tracing/timeline_view.css

-/*
-Copyright (c) 2011 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.
-*/
+/* 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.
+ */
+
 .timeline-view {
+  -webkit-box-flex: 1;
+  -webkit-box-orient: vertical;
+  display: -webkit-box;
   padding: 0;
-  -webkit-box-orient: vertical;
-  -webkit-box-flex: 1;
-  display: -webkit-box;
 }
 
 .timeline-view > .timeline {
+  -webkit-box-flex: 1;
   display: -webkit-box;
-  -webkit-box-flex: 1;
   overflow: auto;
 }
 
 .timeline-view .timeline-container {
   -webkit-box-flex: 1;
   display: -webkit-box;
   overflow: auto;
 }
 
 .timeline-view .timeline-container > * {
   -webkit-box-flex: 1;
 }
 .timeline-view .summary-container * {
   -webkit-user-select: text;
 }
 
 .timeline-view .summary-container {
   border-top: 1px solid black;
+  font-family: monospace;
   max-height: 250px;
   min-height: 250px;
-  font-family: monospace;
   overflow: auto;
 }
 
 .timeline-view .selection {
   margin: 2px;
 }
 
 .timeline-view .selection ul {
   margin: 0;
 }