DevTools: Network panel filter bar overlaps after select resource row.

Source/devtools/front_end/promises/promisePane.css

 /*
  * Copyright 2014 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.
  */
 
 .promises .data-grid {
     border: none;
     flex: 1 1;
 }
 
+.promises > .toolbar {
+    border-bottom: 1px solid #dadada;
+}
+
 .promises .promise-gc {
     opacity: 0.6;
 }
 
 .promises .data-grid th:hover {
     background-color: inherit !important;
 }
 
 .promises .data-grid .odd {
     background-color: #eee;
 }
 
 .promises .data-grid .header-container {
     height: 30px;
-    border-top: 1px solid rgb(205, 205, 205);
 }
 
 .promises .data-grid .data-container {
     top: 29px;
 }
 
 .promises .data-grid table.data {
     background: transparent;
 }
 
@@ skipping 40 matching lines @@
     padding-left: 18px;
     color: rgb(128, 128, 128);
     font-style: italic;
 }
 .promises-filter-status .link:hover {
     color: rgb(15%, 15%, 15%);
 }
 .promises-filter-status .link {
     color: rgb(33%, 33%, 33%);
 }