Reduce frequency of requesting bookmark clusters.

components/enhanced_bookmarks/enhanced_bookmark_model_observer.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 COMPONENTS_ENHANCED_BOOKMARKS_ENHANCED_BOOKMARK_MODEL_OBSERVER_H_
 #define COMPONENTS_ENHANCED_BOOKMARKS_ENHANCED_BOOKMARK_MODEL_OBSERVER_H_
 
 #include <string>
 
 class BookmarkNode;
+class BookmarkModel;
 
 namespace enhanced_bookmarks {
 
 class EnhancedBookmarkModelObserver {
  public:
   // Called when the model has finished loading.
   virtual void EnhancedBookmarkModelLoaded() = 0;
 
   // Called from EnhancedBookmarkModel::ShutDown.
   virtual void EnhancedBookmarkModelShuttingDown() = 0;
 
   // Called when a node is added to the model.
   virtual void EnhancedBookmarkAdded(const BookmarkNode* node) = 0;
 
   // Called when a node is removed from the model.
   virtual void EnhancedBookmarkRemoved(const BookmarkNode* node) = 0;
 
+  // Called when a node has changed.
+  virtual void EnhancedBookmarkNodeChanged(BookmarkModel* model,
+                                           const BookmarkNode* node) = 0;

[noyau (Ping after 24h), 2014/10/29 10:23:05]

Why passing the bookmarkModel as an argument here? This is inconsistent with the
other methods in this file.

Either remove the argument, or pass the EnhancedBookmarkModel instead in all the
methods.

[danduong, 2014/10/29 20:26:09]

Done.

+
   // Called when all user editable nodes are removed from the model.
   virtual void EnhancedBookmarkAllUserNodesRemoved() = 0;
 
   // Called when the remote id of a node changes. If |remote_id| is empty, the
   // remote id has been cleared. This could happen if multiple nodes with the
   // same remote id has been detected.
   virtual void EnhancedBookmarkRemoteIdChanged(const BookmarkNode* node,
                                                const std::string& old_remote_id,
                                                const std::string& remote_id) {};
 
  protected:
   virtual ~EnhancedBookmarkModelObserver() {}
 };
 
 }  // namespace enhanced_bookmarks
 #endif  // COMPONENTS_ENHANCED_BOOKMARKS_ENHANCED_BOOKMARK_MODEL_OBSERVER_H_