Introduce a VM-only dart:scalarlist library for byte arrays.

lib/compiler/implementation/lib/scalarlist.dart

Index: lib/compiler/implementation/lib/scalarlist.dart
diff --git a/lib/compiler/implementation/lib/scalarlist.dart b/lib/compiler/implementation/lib/scalarlist.dart
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+// 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.
+
+// This is a copy of the VM's dart:scalarlist library. This API is not
+// usable when running inside a web browser. Nevertheless, we
+// provide a mock version of the dart:scalarlist so that we can
+// statically analyze programs that use dart:scalarlist.
+
+/**
+ * The scalarlist library is used for Dart server applications,
+ * which run on a stand-alone Dart VM from the command line.
+ * *This library does not work in browser based applications.*
+ *
+ * This library allows you to work with arrays of scalar values
+ * of various sizes.
+ */
+#library("dart:scalarlist");
+#source("../../../scalarlist/scalarlist.dart");