Allow embedder to force visibility of permanent nodes

components/bookmarks/core/browser/bookmark_model.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_BOOKMARKS_CORE_BROWSER_BOOKMARK_MODEL_H_
 #define COMPONENTS_BOOKMARKS_CORE_BROWSER_BOOKMARK_MODEL_H_
 
 #include <map>
 #include <set>
 #include <vector>
@@ skipping 232 matching lines @@
 
   // Returns the next node ID.
   int64 next_node_id() const { return next_node_id_; }
 
   // Returns the object responsible for tracking the set of expanded nodes in
   // the bookmark editor.
   BookmarkExpandedStateTracker* expanded_state_tracker() {
     return expanded_state_tracker_.get();
   }
 
-  // Sets the visibility of one of the permanent nodes. This is set by sync.
+  // Sets the visibility of one of the permanent nodes (unless the node must
+  // always be visible, see |BookmarkClient::IsPermanentNodeVisible| for more
+  // details). This is set by sync.
   void SetPermanentNodeVisible(BookmarkNode::Type type, bool value);
 
+  // Returns the permanent node of type |type|.
+  const BookmarkPermanentNode* PermanentNode(BookmarkNode::Type type);
+
   // Sets/deletes meta info of |node|.
   void SetNodeMetaInfo(const BookmarkNode* node,
                        const std::string& key,
                        const std::string& value);
   void SetNodeMetaInfoMap(const BookmarkNode* node,
                           const BookmarkNode::MetaInfoMap& meta_info_map);
   void DeleteNodeMetaInfo(const BookmarkNode* node,
                           const std::string& key);
 
   // Sets the sync transaction version of |node|.
@@ skipping 99 matching lines @@
   // Creates and returns a new BookmarkLoadDetails. It's up to the caller to
   // delete the returned object.
   scoped_ptr<BookmarkLoadDetails> CreateLoadDetails(
       const std::string& accept_languages);
 
   BookmarkClient* const client_;
 
   // Whether the initial set of data has been loaded.
   bool loaded_;
 
-  // The root node. This contains the bookmark bar node and the 'other' node as
-  // children.
+  // The root node. This contains the bookmark bar node, the 'other' node and
+  // the mobile node as children.
   BookmarkNode root_;
 
   BookmarkPermanentNode* bookmark_bar_node_;
   BookmarkPermanentNode* other_node_;
   BookmarkPermanentNode* mobile_node_;
 
   // The maximum ID assigned to the bookmark nodes in the model.
   int64 next_node_id_;
 
   // The observers.
@@ skipping 23 matching lines @@
 
   // See description of IsDoingExtensiveChanges above.
   int extensive_changes_;
 
   scoped_ptr<BookmarkExpandedStateTracker> expanded_state_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkModel);
 };
 
 #endif  // COMPONENTS_BOOKMARKS_CORE_BROWSER_BOOKMARK_MODEL_H_