Update all Angular libs (run update_all.sh).

third_party/pkg/angular/lib/core/parser/tokens.dart

+part of angular.core.parser.lexer;
+
+class Token {
+  static const Token EOF = const Token._(-1);
+  final int index;
+  const Token._(this.index);
+
+  bool get isIdentifier => false;
+  bool get isString => false;
+  bool get isNumber => false;
+
+  bool isCharacter(int code) => false;
+  bool isOperator(String operator) => false;
+
+  bool get isKeyword => false;
+  bool get isKeywordNull => false;
+  bool get isKeywordUndefined => false;
+  bool get isKeywordTrue => false;
+  bool get isKeywordFalse => false;
+
+  num toNumber() => null;
+}
+
+class CharacterToken extends Token {
+  final int _code;
+  CharacterToken(int index, this._code) : super._(index);
+  bool isCharacter(int code) => _code == code;
+  String toString() => new String.fromCharCode(_code);
+}
+
+class IdentifierToken extends Token {
+  final String _text;
+  final bool _isKeyword;
+  IdentifierToken(int index, this._text, this._isKeyword) : super._(index);
+  bool get isIdentifier => !_isKeyword;
+  bool get isKeyword => _isKeyword;
+  bool get isKeywordNull => _isKeyword && _text == "null";
+  bool get isKeywordUndefined => _isKeyword && _text == "undefined";
+  bool get isKeywordTrue => _isKeyword && _text == "true";
+  bool get isKeywordFalse => _isKeyword && _text == "false";
+  String toString() => _text;
+}
+
+class OperatorToken extends Token {
+  final String _text;
+  OperatorToken(int index, this._text) : super._(index);
+  bool isOperator(String operator) => _text == operator;
+  String toString() => _text;
+}
+
+class NumberToken extends Token {
+  final num _value;
+  NumberToken(int index, this._value) : super._(index);
+  bool get isNumber => true;
+  num toNumber() => _value;
+  String toString() => "$_value";
+}
+
+class StringToken extends Token {
+  final String input;
+  final String _value;
+  StringToken(int index, this.input, this._value) : super._(index);
+  bool get isString => true;
+  String toString() => _value;
+}