Add "committing" status to about://indexeddb-internals.

content/browser/resources/indexed_db/indexeddb_internals.css

 /* Copyright (c) 2013 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. */
 
 .indexeddb-summary {
     background-color: rgb(235, 239, 249);
     border-top: 1px solid rgb(156, 194, 239);
     margin-bottom: 6px;
     margin-top: 12px;
     padding: 3px;
@@ skipping 68 matching lines @@
 
 .indexeddb-transaction.created {
     font-weight: italic;
 }
 .indexeddb-transaction.started {
     font-weight: bold;
 }
 .indexeddb-transaction.running {
     font-weight: bold;
 }
+.indexeddb-transaction.committing {
+    font-weight: bold;
+}
 .indexeddb-transaction.blocked {
 }
 
 .indexeddb-transaction.started .indexeddb-transaction-state {
     background-color: rgb(249, 249, 235);
 }
 .indexeddb-transaction.running .indexeddb-transaction-state {
     background-color: rgb(235, 249, 235);
 }
+.indexeddb-transaction.committing .indexeddb-transaction-state {
+    background-color: rgb(235, 235, 249);
+}
 .indexeddb-transaction.blocked .indexeddb-transaction-state {
     background-color: rgb(249, 235, 235);
 }
 
 .controls a {
     -webkit-margin-end: 16px;
     color: #777;
 }