Initial work on Dart bindings for Mojo.

mojo/public/dart/system/lib/core.dart

Index: mojo/public/dart/system/lib/core.dart
diff --git a/mojo/public/dart/system/lib/core.dart b/mojo/public/dart/system/lib/core.dart
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index 0000000000000000000000000000000000000000..8dcf78eeecb99984d1430520899ef0d9dd0f1439
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+++ b/mojo/public/dart/system/lib/core.dart
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+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+library core;
+
+import 'dart:async';
+import 'dart:core';
+import 'dart:isolate';
+import 'dart:typed_data';
+import 'dart-ext:src/mojo_dart_system';
+
+part 'src/buffer.dart';
+part 'src/data_pipe.dart';
+part 'src/handle.dart';
+part 'src/handle_watcher.dart';
+part 'src/message_pipe.dart';
+part 'src/types.dart';
+
+void setSystemThunks(thunks) native "MojoSystemThunks_Set";