Cleaned up includes and unused declarations in the bookmarks component.

components/bookmarks/core/browser/bookmark_node.cc

 // Copyright 2014 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.
 
 #include "components/bookmarks/core/browser/bookmark_node.h"
 
+#include <map>
+#include <string>
+
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 
 namespace {
 
 // Whitespace characters to strip from bookmark titles.
 const base::char16 kInvalidChars[] = {
   '\n', '\r', '\t',
   0x2028,  // Line separator
   0x2029,  // Paragraph separator
@@ skipping 106 matching lines @@
     : BookmarkNode(id, GURL()),
       visible_(true) {
 }
 
 BookmarkPermanentNode::~BookmarkPermanentNode() {
 }
 
 bool BookmarkPermanentNode::IsVisible() const {
   return visible_ || !empty();
 }