Fix handling of CRLF line endings in Script::GetSnippet.

tests/lib/mirrors/method_mirror_source_line_ending_crlf.dart

Index: tests/lib/mirrors/method_mirror_source_line_ending_crlf.dart
diff --git a/tests/language/check_member_static_test.dart b/tests/lib/mirrors/method_mirror_source_line_ending_crlf.dart
old mode 100644
new mode 100755
similarity index 52%
copy from tests/language/check_member_static_test.dart
copy to tests/lib/mirrors/method_mirror_source_line_ending_crlf.dart
index e66c37da0bfd939d4a2c57a2aa3e80e314249be8..bcf3e64c1f2d6907bb0f89b82eeced936ad9a7ff
--- a/tests/language/check_member_static_test.dart
+++ b/tests/lib/mirrors/method_mirror_source_line_ending_crlf.dart
@@ -1,21 +1,16 @@
-// Copyright (c) 2014, 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.
-
-class A {
-  static var a;
-  var b;
-}
-
-class B extends A {
-
-}
-
-class C extends B {
-  var a; /// 01: static type warning
-  static var b; /// 02: compile-time error
-}
-
-void main() {
-  new C();
-}
+// Copyright (c) 2014, 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.
+
+// This file is marked executable so source control will preserve the type of
+// line ending.
+
+library line_endings.crlf;
+
+oneLineCRLF(x) => x;
+multiLineCRLF(y) {
+  return y + 1;
+}
+c
+(){
+}