DevTools: fix computed style pane layout

third_party/WebKit/Source/devtools/front_end/elements/computedStyleSidebarPane.css

 /*
  * Copyright (c) 2015 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.
  */
 
 .computed-properties {
     -webkit-user-select: text;
+    flex-shrink: 0;
 }
 
 .computed-style-property {
     display: flex;
     overflow: hidden;
     flex: auto;
 }
 
 .computed-style-property .property-name {
     min-width: 5em;
@@ skipping 99 matching lines @@
     margin-left: 4px;
 }
 
 .delimeter {
     color: transparent;
 }
 
 .delimeter::selection {
     color: transparent;
 }