Incorporates feedback by Nicolas for UTF-8 bytes based scanner CL

sdk/lib/_internal/compiler/implementation/scanner/utf8_bytes_scanner.dart

Index: sdk/lib/_internal/compiler/implementation/scanner/utf8_bytes_scanner.dart
diff --git a/sdk/lib/_internal/compiler/implementation/scanner/utf8_bytes_scanner.dart b/sdk/lib/_internal/compiler/implementation/scanner/utf8_bytes_scanner.dart
index 7e7cdf713146df5f0fb869c99f7b68a23b784159..523495cea423a8e3d5a3a510be2e88f0a2c97816 100644
--- a/sdk/lib/_internal/compiler/implementation/scanner/utf8_bytes_scanner.dart
+++ b/sdk/lib/_internal/compiler/implementation/scanner/utf8_bytes_scanner.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2013, 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.
 
@@ -13,7 +13,7 @@ class Utf8BytesScanner extends ArrayBasedScanner {
   List<int> bytes;
 
   /**
-   * Points to the offset of the byte last returned by [advance].
+   * Points to the offset of the last byte returned by [advance].
    *
    * After invoking [currentAsUnicode], the [byteOffset] points to the last
    * byte that is part of the (unicode or ASCII) character. That way, [advance]
@@ -184,7 +184,6 @@ class Utf8BytesScanner extends ArrayBasedScanner {
   Token firstToken() => tokens.next;
   Token previousToken() => tail;
 
-
   void appendSubstringToken(PrecedenceInfo info, int start, bool asciiOnly,
                             [int extraOffset = 0]) {
     tail.next = new StringToken.fromUtf8Bytes(