[DevTools] Remove TreeOutline from IDBDatabaseView.

third_party/WebKit/Source/devtools/front_end/resources/indexedDBViews.css

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 .indexed-db-database-view {
     -webkit-user-select: text;
     margin-top: 5px;
 }
 
-.indexed-db-database-view .outline-disclosure {
-    padding-left: 0;
+.indexed-db-database-view .header-row {
+    white-space: nowrap;
+    margin: 0 0 2px 10px;
 }
 
-.indexed-db-database-view .outline-disclosure li {
-    white-space: nowrap;
-}
-
-.indexed-db-database-view .outline-disclosure .attribute-name {
+.indexed-db-database-view .header-row .attribute-name {
     color: rgb(33%, 33%, 33%);
     display: inline-block;
     margin-right: 0.5em;
     font-weight: bold;
     vertical-align: top;
 }
 
-.indexed-db-database-view .outline-disclosure .attribute-value {
+.indexed-db-database-view .header-row .attribute-value {
     display: inline;
     margin-top: 1px;
 }
 
 .indexed-db-data-view .data-view-toolbar {
     position: relative;
     background-color: #eee;
     border-bottom: 1px solid #ccc;
 }
 
@@ skipping 43 matching lines @@
     white-space: nowrap;
     text-overflow: ellipsis;
     overflow: hidden;
 }
 
 .indexed-db-key-path {
     color: rgb(196, 26, 22);
     white-space: pre-wrap;
     unicode-bidi: -webkit-isolate;
 }