[Extensions] Convert APIs to use movable types [2]

chrome/browser/extensions/api/bookmarks/bookmark_api_helpers.h

Index: chrome/browser/extensions/api/bookmarks/bookmark_api_helpers.h
diff --git a/chrome/browser/extensions/api/bookmarks/bookmark_api_helpers.h b/chrome/browser/extensions/api/bookmarks/bookmark_api_helpers.h
index b7d7216f73657648be59c84b63dd44fdca1a5c15..8135ad61098ebac578a2de03a9eca7090d5ff541 100644
--- a/chrome/browser/extensions/api/bookmarks/bookmark_api_helpers.h
+++ b/chrome/browser/extensions/api/bookmarks/bookmark_api_helpers.h
@@ -22,8 +22,7 @@ class ManagedBookmarkService;
 namespace extensions {
 namespace bookmark_api_helpers {
 
-// The returned value is owned by the caller.
-api::bookmarks::BookmarkTreeNode* GetBookmarkTreeNode(
+api::bookmarks::BookmarkTreeNode GetBookmarkTreeNode(
     bookmarks::ManagedBookmarkService* managed,
     const bookmarks::BookmarkNode* node,
     bool recurse,
@@ -40,15 +39,14 @@ void PopulateBookmarkTreeNode(
 // Adds a JSON representation of |node| to the JSON |nodes|.
 void AddNode(bookmarks::ManagedBookmarkService* managed,
              const bookmarks::BookmarkNode* node,
-             std::vector<linked_ptr<api::bookmarks::BookmarkTreeNode>>* nodes,
+             std::vector<api::bookmarks::BookmarkTreeNode>* nodes,
              bool recurse);
 
 // Adds a JSON representation of |node| of folder type to the JSON |nodes|.
-void AddNodeFoldersOnly(
-    bookmarks::ManagedBookmarkService* managed,
-    const bookmarks::BookmarkNode* node,
-    std::vector<linked_ptr<api::bookmarks::BookmarkTreeNode>>* nodes,
-    bool recurse);
+void AddNodeFoldersOnly(bookmarks::ManagedBookmarkService* managed,
+                        const bookmarks::BookmarkNode* node,
+                        std::vector<api::bookmarks::BookmarkTreeNode>* nodes,
+                        bool recurse);
 
 // Remove node of |id|.
 bool RemoveNode(bookmarks::BookmarkModel* model,