BookmarkClient can add extra nodes to BookmarkModel.

chrome/browser/bookmarks/chrome_bookmark_client.h

 // 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.
 
 #ifndef CHROME_BROWSER_BOOKMARKS_CHROME_BOOKMARK_CLIENT_H_
 #define CHROME_BROWSER_BOOKMARKS_CHROME_BOOKMARK_CLIENT_H_
 
 #include "base/compiler_specific.h"
 #include "components/bookmarks/browser/base_bookmark_model_observer.h"
 #include "components/bookmarks/browser/bookmark_client.h"
@@ skipping 22 matching lines @@
   virtual base::CancelableTaskTracker::TaskId GetFaviconImageForURL(
       const GURL& page_url,
       int icon_types,
       int desired_size_in_dip,
       const favicon_base::FaviconImageCallback& callback,
       base::CancelableTaskTracker* tracker) OVERRIDE;
   virtual bool SupportsTypedCountForNodes() OVERRIDE;
   virtual void GetTypedCountForNodes(
       const NodeSet& nodes,
       NodeTypedCountPairs* node_typed_count_pairs) OVERRIDE;
-  virtual bool IsPermanentNodeVisible(int node_type) OVERRIDE;
+  virtual bool IsPermanentNodeVisible(
+      const BookmarkPermanentNode* node) OVERRIDE;
   virtual void RecordAction(const base::UserMetricsAction& action) OVERRIDE;
+  virtual bookmarks::LoadExtraCallback GetLoadExtraNodesCallback() OVERRIDE;
+  virtual bool CanRemovePermanentNodeChildren(
+      const BookmarkNode* node) OVERRIDE;
+  virtual bool CanSetPermanentNodeTitle(
+      const BookmarkNode* permanent_node) OVERRIDE;
+  virtual bool CanSyncNode(const BookmarkNode* node) OVERRIDE;
+  virtual bool CanReorderChildren(const BookmarkNode* parent) OVERRIDE;
 
   // content::NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // KeyedService:
   virtual void Shutdown() OVERRIDE;
 
  private:
   // BaseBookmarkModelObserver:
   virtual void BookmarkModelChanged() OVERRIDE;
   virtual void BookmarkNodeRemoved(BookmarkModel* model,
                                    const BookmarkNode* parent,
                                    int old_index,
                                    const BookmarkNode* node,
                                    const std::set<GURL>& removed_urls) OVERRIDE;
   virtual void BookmarkAllNodesRemoved(
       BookmarkModel* model,
       const std::set<GURL>& removed_urls) OVERRIDE;
 
+  // Helper for GetLoadExtraNodesCallback().
+  static bookmarks::BookmarkPermanentNodeList LoadExtraNodes(int64* next_id);
+
   Profile* profile_;
 
   content::NotificationRegistrar registrar_;
 
   scoped_ptr<BookmarkModel> model_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBookmarkClient);
 };
 
 #endif  // CHROME_BROWSER_BOOKMARKS_CHROME_BOOKMARK_CLIENT_H_