fasta: Use more efficient Uint16List/Uint32List for line offset information, use hints for length

pkg/front_end/lib/src/fasta/scanner/array_based_scanner.dart

Index: pkg/front_end/lib/src/fasta/scanner/array_based_scanner.dart
diff --git a/pkg/front_end/lib/src/fasta/scanner/array_based_scanner.dart b/pkg/front_end/lib/src/fasta/scanner/array_based_scanner.dart
index b1da92be4497a4aa8d8147592109a1e6066f52f4..18666bb46dbeffc3e8bf478d18ebd29ead42316c 100644
--- a/pkg/front_end/lib/src/fasta/scanner/array_based_scanner.dart
+++ b/pkg/front_end/lib/src/fasta/scanner/array_based_scanner.dart
@@ -39,8 +39,8 @@ import 'package:front_end/src/fasta/util/link.dart' show
 abstract class ArrayBasedScanner extends AbstractScanner {
   bool hasErrors = false;
 
-  ArrayBasedScanner(bool includeComments)
-      : super(includeComments);
+  ArrayBasedScanner(bool includeComments, {int numberOfBytesHint})
+      : super(includeComments, numberOfBytesHint: numberOfBytesHint);
 
   /**
    * The stack of open groups, e.g [: { ... ( .. :]