Revert "Delete the ViewManager and WindowManager services."

mojo/dart/packages/mojo_services/lib/mojo/view_manager_constants.mojom.dart

Index: mojo/dart/packages/mojo_services/lib/mojo/view_manager_constants.mojom.dart
diff --git a/mojo/dart/packages/mojo_services/lib/mojo/view_manager_constants.mojom.dart b/mojo/dart/packages/mojo_services/lib/mojo/view_manager_constants.mojom.dart
new file mode 100644
index 0000000000000000000000000000000000000000..7591fbaa3f41127bf8493f0587b8e4504dae9510
--- /dev/null
+++ b/mojo/dart/packages/mojo_services/lib/mojo/view_manager_constants.mojom.dart
@@ -0,0 +1,63 @@
+// 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 view_manager_constants_mojom;
+
+import 'dart:async';
+
+import 'package:mojo/bindings.dart' as bindings;
+import 'package:mojo/core.dart' as core;
+
+class OrderDirection extends bindings.MojoEnum {
+  static const OrderDirection above = const OrderDirection._(1);
+  static const OrderDirection below = const OrderDirection._(2);
+
+  const OrderDirection._(int v) : super(v);
+
+  static const Map<String, OrderDirection> valuesMap = const {
+    "above": above,
+    "below": below,
+  };
+  static const List<OrderDirection> values = const [
+    above,
+    below,
+  ];
+
+  static OrderDirection valueOf(String name) => valuesMap[name];
+
+  factory OrderDirection(int v) {
+    switch (v) {
+      case 1:
+        return above;
+      case 2:
+        return below;
+      default:
+        return null;
+    }
+  }
+
+  static OrderDirection decode(bindings.Decoder decoder0, int offset) {
+    int v = decoder0.decodeUint32(offset);
+    OrderDirection result = new OrderDirection(v);
+    if (result == null) {
+      throw new bindings.MojoCodecError(
+          'Bad value $v for enum OrderDirection.');
+    }
+    return result;
+  }
+
+  String toString() {
+    switch(this) {
+      case above:
+        return 'OrderDirection.above';
+      case below:
+        return 'OrderDirection.below';
+    }
+  }
+
+  int toJson() => mojoEnumValue;
+}
+
+
+