Experimental bookmark model based on tags.

chrome/browser/bookmarks/bookmark_model_observer.h

 // Copyright (c) 2012 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_BOOKMARK_MODEL_OBSERVER_H_
 #define CHROME_BROWSER_BOOKMARKS_BOOKMARK_MODEL_OBSERVER_H_
 
 class BookmarkModel;
 class BookmarkNode;
 
@@ skipping 39 matching lines @@
                                    const BookmarkNode* node) = 0;
 
   // Invoked before the title or url of a node is changed.
   virtual void OnWillChangeBookmarkNode(BookmarkModel* model,
                                         const BookmarkNode* node) {}
 
   // Invoked when the title or url of a node changes.
   virtual void BookmarkNodeChanged(BookmarkModel* model,
                                    const BookmarkNode* node) = 0;
 
+  // Invoked before the metainfo of a node is changed.

[sky, 2013/10/11 21:57:41]

Clarify that nothing may have changed here and below.

[noyau (Ping after 24h), 2013/10/14 23:59:39]

I'll be changing the notification so it is only send when something actually
changes.

+  virtual void OnWillChangeBookmarkMetaInfo(BookmarkModel* model,
+                                            const BookmarkNode* node) {}
+
+  // Invoked when the metainfo on a node changes.
+  virtual void BookmarkMetaInfoChanged(BookmarkModel* model,
+                                       const BookmarkNode* node) {}
+
   // Invoked when a favicon has been loaded or changed.
   virtual void BookmarkNodeFaviconChanged(BookmarkModel* model,
                                           const BookmarkNode* node) = 0;
 
   // Invoked before the direct children of |node| have been reordered in some
   // way, such as sorted.
   virtual void OnWillReorderBookmarkNode(BookmarkModel* model,
                                          const BookmarkNode* node) {}
 
   // Invoked when the children (just direct children, not descendants) of
@@ skipping 18 matching lines @@
   virtual void OnWillRemoveAllBookmarks(BookmarkModel* model) {}
 
   // Invoked when all non-permanent bookmark nodes have been removed.
   virtual void BookmarkAllNodesRemoved(BookmarkModel* model) = 0;
 
  protected:
   virtual ~BookmarkModelObserver() {}
 };
 
 #endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_MODEL_OBSERVER_H_