downloads/bookmarks: combine header CSS between downloads and bookmarks.

chrome/browser/resources/bookmark_manager/css/bmm.css

Index: chrome/browser/resources/bookmark_manager/css/bmm.css
diff --git a/chrome/browser/resources/bookmark_manager/css/bmm.css b/chrome/browser/resources/bookmark_manager/css/bmm.css
index bdb9c71ed4aade477867737ed9aa488d05897909..1d8cf39aa17b766f292183cfb4445830662a0c7a 100644
--- a/chrome/browser/resources/bookmark_manager/css/bmm.css
+++ b/chrome/browser/resources/bookmark_manager/css/bmm.css
@@ -2,6 +2,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
+<include src="../search_header.css">
+
 html,
 body {
   cursor: default;
@@ -249,23 +251,6 @@ list > .folder > .label,
 </if>
 }
 
-header {
-  align-items: center;
-  display: flex;
-  min-width: 400px;
-  padding: 0 12px;
-}
-
-header h2 {
-  flex: 1;
-  font-weight: normal;
-  line-height: 1;  /* TODO(dbeam): include chrome_shared.css on this page. */
-}
-
-header form {
-  flex: none;
-}
-
 .tree-row.drag-on,
 .drag-on {
   background-color: hsla(214, 91%, 85%, .5);
@@ -309,16 +294,7 @@ list > .drag-above {
   overflow : visible;
 }
 
-.summary {
-  background-color: rgb(235, 239, 249);
-  border-top: 1px solid rgb(156, 194, 239);
-  clear: both;
-  padding: 5px 10px;
-  white-space: nowrap;
-}
-
 .summary > * {
-  display: inline-block;
   font-size: 100%;
   margin: 0;
 }