Remove service-compiler related code.

pkg/servicec/lib/scanner.dart

-// Copyright (c) 2015, the Dartino 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 servicec.scanner;
-
-import 'package:compiler/src/tokens/token.dart' show
-    StringToken,
-    ErrorToken,
-    KeywordToken,
-    SymbolToken,
-    Token,
-    UnmatchedToken;
-
-import 'package:compiler/src/tokens/precedence_constants.dart' show
-    GT_INFO,
-    EOF_INFO,
-    IDENTIFIER_INFO,
-    STRING_INFO;
-
-import 'package:compiler/src/tokens/precedence.dart' show
-    PrecedenceInfo;
-
-import "package:compiler/src/tokens/keyword.dart" show
-    Keyword;
-
-import "package:compiler/src/scanner/string_scanner.dart" show
-    StringScanner;
-
-import "package:compiler/src/util/characters.dart" show
-    $LF;
-
-import "keyword.dart" as own;
-
-const int LF_TOKEN = $LF;
-const PrecedenceInfo LF_INFO = const PrecedenceInfo('<new-line>', 0, LF_TOKEN);
-
-class Scanner extends StringScanner {
-  Scanner(String input)
-    : super.fromString(input);
-
-  void appendKeywordToken(Keyword keyword) {
-    if (isServicecKeyword(keyword.syntax)) {
-      super.appendKeywordToken(own.Keyword.keywords[keyword.syntax]);
-    } else {
-      super.appendSubstringToken(IDENTIFIER_INFO,
-                                 scanOffset - keyword.syntax.length,
-                                 true);
-    }
-  }
-
-  void appendSubstringToken(PrecedenceInfo info, int start,
-                            bool asciiOnly, [int extraOffset = 0]) {
-    String syntax = string.substring(start, scanOffset + extraOffset);
-    if (isServicecKeyword(syntax)) {
-      Keyword keyword = own.Keyword.keywords[syntax];
-      super.appendKeywordToken(keyword);
-    } else {
-      super.appendSubstringToken(info, start, asciiOnly, extraOffset);
-    }
-  }
-
-  void appendErrorToken(ErrorToken token) {
-    // Ignore unmatched tokens, since we handle them in a different way.
-    if (token is! UnmatchedToken) {
-      super.appendErrorToken(token);
-    }
-  }
-
-  void appendGtGt(PrecedenceInfo info) {
-    // There is no shift operator in the IDL, so treat >> as > >.
-    appendGt(GT_INFO);
-    appendGt(GT_INFO);
-  }
-
-  void appendWhiteSpace(int next) {
-    super.appendWhiteSpace(next);
-    if (next == $LF) {
-      tail.next = new SymbolToken(LF_INFO, stringOffset);
-      tail = tail.next;
-    }
-  }
-}
-
-bool isServicecKeyword(String string) {
-  return own.Keyword.keywords.containsKey(string);
-}