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

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library fasta.scanner.array_based_scanner;
 
 import 'error_token.dart' show
     ErrorToken;
 
 import 'keyword.dart' show
@@ skipping 21 matching lines @@
 
 import 'abstract_scanner.dart' show
     AbstractScanner;
 
 import 'package:front_end/src/fasta/util/link.dart' show
     Link;
 
 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 [: { ... ( .. :]
    * Each BeginGroupToken has a pointer to the token where the group
    * ends. This field is set when scanning the end group token.
    */
   Link<BeginGroupToken> groupingStack = const Link<BeginGroupToken>();
 
   /**
    * Appends a fixed token whose kind and content is determined by [info].
@@ skipping 190 matching lines @@
    * something which cannot possibly be part of a type parameter/argument
    * list, like the '=' in the above example.
    */
   void discardOpenLt() {
     while (!groupingStack.isEmpty &&
         identical(groupingStack.head.kind, LT_TOKEN)) {
       groupingStack = groupingStack.tail;
     }
   }
 }