DevTools: extract a component for layer viewer

third_party/WebKit/Source/devtools/front_end/ui/inspectorCommon.css

 /*
  * Copyright 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.
  */
 
 * {
     /* This is required for correct sizing of flex items because we rely
      * on an old version of the flexbox spec.
      * Longer-term we should remove this, see crbug.com/473625 */
@@ skipping 274 matching lines @@
 .gray-info-message {
     text-align: center;
     font-style: italic;
     padding: 6px;
     color: #888;
 }
 
 label[is=dt-icon-label] {
     flex: none;
 }
+
+.full-widget-dimmed-banner a {
+    color: inherit;
+}
+
+.full-widget-dimmed-banner {
+    color: #777;
+    background-color: white;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    text-align: center;
+    padding: 20px;
+    position: absolute;
+    top: 0;
+    right: 0;
+    bottom: 0;
+    left: 0;
+    font-size: 13px;
+    overflow: auto;
+    z-index: 500;
+}