Remove legacy API on Utf16CharacterStream.

src/parsing/parser.cc

Index: src/parsing/parser.cc
diff --git a/src/parsing/parser.cc b/src/parsing/parser.cc
index 77173a40d70d4da11112647817391631715776ee..b4432f48ddf219c93236f9f4a78a623c22f8ffda 100644
--- a/src/parsing/parser.cc
+++ b/src/parsing/parser.cc
@@ -3120,10 +3120,10 @@ FunctionLiteral* Parser::ParseFunctionLiteral(
     // eagerly.
     if (is_lazily_parsed) {
       Scanner::BookmarkScope bookmark(scanner());
-      bool may_abort = bookmark.Set();
+      bookmark.Set();
       LazyParsingResult result =
           SkipLazyFunctionBody(&materialized_literal_count,
-                               &expected_property_count, may_abort, CHECK_OK);
+                               &expected_property_count, true, CHECK_OK);
 
       materialized_literal_count += formals.materialized_literals_count +
                                     function_state.materialized_literal_count();