Fix source locations for inlined and patched functions.

lib/compiler/implementation/scanner/parser.dart

 // 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.
 
 /**
  * An event generating parser of Dart programs. This parser expects
  * all tokens in a linked list (aka a token stream).
  *
  * The class [Scanner] is used to generate a token stream. See the
  * file scanner.dart.
@@ skipping 188 matching lines @@
     if (value !== 'this') {
       Token peek = peekAfterExpectedType(token);
       if (isIdentifier(peek) || optional('this', peek)) {
         return parseType(token);
       }
     }
     listener.handleNoType(token);
     return token;
   }
 
-  bool isIdentifier(Token token) {
-    final kind = token.kind;
-    if (kind === IDENTIFIER_TOKEN) return true;
-    if (kind === KEYWORD_TOKEN) return token.value.isPseudo;
-    return false;
-  }
+  bool isIdentifier(Token token) => token.isIdentifier();
 
   Token parseDefaultClauseOpt(Token token) {
     if (isDefaultKeyword(token)) {
       // TODO(ahe): Remove support for 'factory' in this position.
       Token defaultKeyword = token;
       listener.beginDefaultClause(defaultKeyword);
       token = parseIdentifier(token.next);
       token = parseQualifiedRestOpt(token);
       token = parseTypeVariablesOpt(token);
       listener.endDefaultClause(defaultKeyword);
@@ skipping 1626 matching lines @@
     }
     listener.handleContinueStatement(hasTarget, continueKeyword, token);
     return expectSemicolon(token);
   }
 
   Token parseEmptyStatement(Token token) {
     listener.handleEmptyStatement(token);
     return expectSemicolon(token);
   }
 }