Reduce the memory usage of bookmarks storage

components/bookmarks/browser/bookmark_storage.cc

Index: components/bookmarks/browser/bookmark_storage.cc
diff --git a/components/bookmarks/browser/bookmark_storage.cc b/components/bookmarks/browser/bookmark_storage.cc
index d32a90c88061a8b082c770da656f63da4bdfc0a2..2841b43090012885fd0b6c69c15ff692e55806d9 100644
--- a/components/bookmarks/browser/bookmark_storage.cc
+++ b/components/bookmarks/browser/bookmark_storage.cc
@@ -34,6 +34,10 @@ const base::FilePath::CharType kBackupExtension[] = FILE_PATH_LITERAL("bak");
 // How often we save.
 const int kSaveDelayMS = 2500;
 
+// Keys in meta info of bookmark node that should be excluded after removing
+// enhanced bookmarks feature crrev.com/1638413003.
+const char* const kExcludedMetaInfoKeys[] = {"stars."};
+
 void BackupCallback(const base::FilePath& path) {
   base::FilePath backup_path = path.ReplaceExtension(kBackupExtension);
   base::CopyFile(path, backup_path);
@@ -69,6 +73,12 @@ void LoadCallback(const base::FilePath& path,
       // thread.
       int64_t max_node_id = 0;
       BookmarkCodec codec;
+      std::vector<std::string> excluded_keys;
+      excluded_keys.insert(excluded_keys.end(),
+                           std::begin(kExcludedMetaInfoKeys),
+                           std::end(kExcludedMetaInfoKeys));
+      codec.set_excluded_meta_info_keys(excluded_keys);
+
       TimeTicks start_time = TimeTicks::Now();
       codec.Decode(details->bb_node(), details->other_folder_node(),
                    details->mobile_folder_node(), &max_node_id, *root.get());