Add appengine/gcloud/mustache dependencies.

pkg/appengine/lib/src/protobuf_api/logging_service.dart

+// 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.
+
+library logging_service;
+
+import 'dart:async';
+
+import 'package:protobuf/protobuf.dart';
+
+import 'internal/api_base.pb.dart';
+import 'internal/log_service.pb.dart' as pb;
+import 'rpc/rpc_service.dart';
+import '../../api/errors.dart' as errors;
+
+class LoggingServiceClientRPCStub {
+  final RPCService _rpcService;
+  final String _ticket;
+
+  LoggingServiceClientRPCStub(this._rpcService, this._ticket);
+
+  Future<VoidProto> Flush(pb.FlushRequest request) {
+    return _rpcService.call(
+        'logservice', 'Flush', request.writeToBuffer(), ticket: _ticket)
+        .then((List<int> response) {
+          try {
+            return new VoidProto.fromBuffer(response);
+          } on InvalidProtocolBufferException catch (error) {
+            throw errors.ProtocolError.INVALID_RESPONSE;
+          }
+    });
+  }
+}