Managed bookmarks for supervised users

components/bookmarks/browser/bookmark_utils.cc

Index: components/bookmarks/browser/bookmark_utils.cc
diff --git a/components/bookmarks/browser/bookmark_utils.cc b/components/bookmarks/browser/bookmark_utils.cc
index cda6cd3f49ca092683667f31cc93fda2272b9463..7199ad5c6332400c87d051e716d2eda1fd7516ac 100644
--- a/components/bookmarks/browser/bookmark_utils.cc
+++ b/components/bookmarks/browser/bookmark_utils.cc
@@ -510,4 +510,18 @@ const BookmarkNode* GetBookmarkNodeByID(const BookmarkModel* model, int64 id) {
   return GetNodeByID(model->root_node(), id);
 }
 
+bool IsDescendantOf(const bookmarks::BookmarkNode* node,
+                    const bookmarks::BookmarkNode* root) {
+  return node && node->HasAncestor(root);
+}
+
+bool HasDescendantsOf(const std::vector<const bookmarks::BookmarkNode*>& list,
+                      const bookmarks::BookmarkNode* root) {
+  for (const BookmarkNode* node : list) {
+    if (IsDescendantOf(node, root))
+      return true;
+  }
+  return false;
+}
+
 }  // namespace bookmarks