Roll Observatory packages and add a roll script

csslib/lib/src/token.dart

Index: csslib/lib/src/token.dart
diff --git a/csslib/lib/src/token.dart b/csslib/lib/src/token.dart
deleted file mode 100644
index e30484d589c9f72e3a6c041df38259f560153dcb..0000000000000000000000000000000000000000
--- a/csslib/lib/src/token.dart
+++ /dev/null
@@ -1,65 +0,0 @@
-// Copyright (c) 2012, 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.
-
-part of csslib.parser;
-
-/**
- * A single token in the Dart language.
- */
-class Token {
-  /** A member of [TokenKind] specifying what kind of token this is. */
-  final int kind;
-
-  /** The location where this token was parsed from. */
-  final FileSpan span;
-
-  /** The start offset of this token. */
-  int get start => span.start.offset;
-
-  /** The end offset of this token. */
-  int get end => span.end.offset;
-
-  /** Returns the source text corresponding to this [Token]. */
-  String get text => span.text;
-
-  Token(this.kind, this.span);
-
-  /** Returns a pretty representation of this token for error messages. **/
-  String toString() {
-    var kindText = TokenKind.kindToString(kind);
-    var actualText = text.trim();
-    if (kindText != actualText) {
-      if (actualText.length > 10) {
-        actualText = '${actualText.substring(0, 8)}...';
-      }
-      return '$kindText($actualText)';
-    } else {
-      return kindText;
-    }
-  }
-}
-
-/** A token containing a parsed literal value. */
-class LiteralToken extends Token {
-  var value;
-  LiteralToken(int kind, FileSpan span, this.value) : super(kind, span);
-}
-
-/** A token containing error information. */
-class ErrorToken extends Token {
-  String message;
-  ErrorToken(int kind, FileSpan span, this.message) : super(kind, span);
-}
-
-/**
- * CSS ident-token.
- *
- * See <http://dev.w3.org/csswg/css-syntax/#typedef-ident-token> and
- * <http://dev.w3.org/csswg/css-syntax/#ident-token-diagram>.
- */
-class IdentifierToken extends Token {
-  final String text;
-
-  IdentifierToken(this.text, int kind, FileSpan span) : super(kind, span);
-}