BookmarkClient can add extra nodes to BookmarkModel.

components/bookmarks/browser/bookmark_storage.h

Index: components/bookmarks/browser/bookmark_storage.h
diff --git a/components/bookmarks/browser/bookmark_storage.h b/components/bookmarks/browser/bookmark_storage.h
index a3d5924333c6a118a144d615ab866e0f4ce6ea9f..4910d53bc1cdfaa6f0139c57e9641b8a62936c03 100644
--- a/components/bookmarks/browser/bookmark_storage.h
+++ b/components/bookmarks/browser/bookmark_storage.h
@@ -15,6 +15,7 @@ class BookmarkIndex;
 class BookmarkModel;
 
 namespace base {
+class ListValue;
 class SequencedTaskRunner;
 }
 
@@ -33,6 +34,7 @@ class BookmarkLoadDetails {
   BookmarkLoadDetails(BookmarkPermanentNode* bb_node,
                       BookmarkPermanentNode* other_folder_node,
                       BookmarkPermanentNode* mobile_folder_node,
+                      BookmarkPermanentNode* managed_node,
                       BookmarkIndex* index,
                       int64 max_id);
   ~BookmarkLoadDetails();
@@ -51,6 +53,10 @@ class BookmarkLoadDetails {
   BookmarkPermanentNode* release_other_folder_node() {
     return other_folder_node_.release();
   }
+  BookmarkPermanentNode* managed_node() { return managed_node_.get(); }
+  BookmarkPermanentNode* release_managed_node() {
+    return managed_node_.release();
+  }
   BookmarkIndex* index() { return index_.get(); }
   BookmarkIndex* release_index() { return index_.release(); }
 
@@ -95,6 +101,7 @@ class BookmarkLoadDetails {
   scoped_ptr<BookmarkPermanentNode> bb_node_;
   scoped_ptr<BookmarkPermanentNode> other_folder_node_;
   scoped_ptr<BookmarkPermanentNode> mobile_folder_node_;
+  scoped_ptr<BookmarkPermanentNode> managed_node_;
   scoped_ptr<BookmarkIndex> index_;
   BookmarkNode::MetaInfoMap model_meta_info_map_;
   int64 model_sync_transaction_version_;
@@ -126,6 +133,7 @@ class BookmarkStorage : public base::ImportantFileWriter::DataSerializer,
   // a task in |task_runner|. See BookmarkLoadDetails for details.
   void LoadBookmarks(
       scoped_ptr<BookmarkLoadDetails> details,
+      scoped_ptr<base::ListValue> initial_managed_bookmarks,
       const scoped_refptr<base::SequencedTaskRunner>& task_runner);
 
   // Schedules saving the bookmark bar model to disk.