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

chrome/browser/resources/task_manager/task_manager.css

-/*
- * Copyright (c) 2012 The Chromium Authors. All rights reserved.
+/* 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.
  */
 
 * {
   margin: 0;
   padding: 0;
 }
 
 html {
@@ skipping 57 matching lines @@
 
 /* Title Column text containers. */
 .detail-title {
   display: -webkit-box;
   height: 20px;
 }
 
 /* Bullets on the left of row. */
 .table-row > .table-row-cell:first-child:before {
   -webkit-border-radius: 3px;
-  background: #CCCCCC;
-  content: "";
+  background: #ccc;
+  content: '';
   display: block;
   margin: 7px 4px 7px 7px;
   width: 6px;
 }
 
 .table-background-row {
   background-color: hsl(34, 91%, 87%);
   background-image: -webkit-linear-gradient(rgba(255, 255, 255, 0.8),
                                             rgba(255, 255, 255, 0));
   border-color: hsl(34, 91%, 65%);
@@ skipping 44 matching lines @@
 
 /* Container for the ok/cancel buttons. */
 .footer-left-container {
   -webkit-box-align: center;
   -webkit-box-flex: 1;
   display: -webkit-box;
   text-align: left;
 }
 
 #about-memory-link {
+  color: rgb(17, 85, 204);
   padding-left: 2px;
-  color: #1155CC;
 }
 
 /* Container for the ok/cancel buttons. */
 .footer-right-container {
   -webkit-box-flex: 1;
   text-align: right;
 }
 
 button {
   margin: 2px 0 2px 8px;
 }