Implement read-only indexedb-internals

content/browser/resources/indexed_db/indexeddb_internals.css

Index: content/browser/resources/indexed_db/indexeddb_internals.css
diff --git a/content/browser/resources/indexed_db/indexeddb_internals.css b/content/browser/resources/indexed_db/indexeddb_internals.css
index 62b75b6aa40ae07227707175f53c0d1f61cd8931..2bbea779d36c9b7195755612dc9dcf3198aac8d5 100644
--- a/content/browser/resources/indexed_db/indexeddb_internals.css
+++ b/content/browser/resources/indexed_db/indexeddb_internals.css
@@ -1,3 +1,35 @@
 /* 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;
+    font-weight: bold;
+}
+
+.indexeddb-item {
+    margin-bottom: 15px;
+    margin-top: 6px;
+    position: relative;
+}
+
+.indexeddb-url {
+    color: rgb(85, 102, 221);
+    display: inline-block;
+    max-width: 500px;
+    overflow: hidden;
+    padding-bottom: 1px;
+    padding-top: 4px;
+    text-decoration: none;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+}
+
+.controls a {
+    -webkit-margin-end: 16px;
+    color: #777;
+}