Rationalize Dart mojo and sky package structure

mojo/dart/test/validation_test.dart

 // Copyright 2015 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.
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:isolate';
 import 'dart:mojo.builtin' as builtin;
 import 'dart:typed_data';
 
-import 'package:mojo/dart/testing/validation_test_input_parser.dart' as parser;
-import 'package:mojo/public/dart/bindings.dart';
-import 'package:mojo/public/dart/core.dart';
+import 'package:testing/validation_test_input_parser.dart' as parser;
+import 'package:mojo/bindings.dart';
+import 'package:mojo/core.dart';
 import 'package:mojom/mojo/test/validation_test_interfaces.mojom.dart';
 
 class ConformanceTestInterfaceImpl implements ConformanceTestInterface {
   ConformanceTestInterfaceStub _stub;
   Completer _completer;
 
   ConformanceTestInterfaceImpl(
       this._completer, MojoMessagePipeEndpoint endpoint) {
     _stub = new ConformanceTestInterfaceStub.fromEndpoint(endpoint, this);
   }
@@ skipping 104 matching lines @@
   var futures = getTestFiles(path, "$path/conformance_").map((test) {
     return runTest(test, readAndParseTest(test), expectedResult(test));
   });
   Future.wait(futures).then((_) {
     assert(MojoHandle.reportLeakedHandles());
   }, onError: (e) {
     assert(MojoHandle.reportLeakedHandles());
   });
   // TODO(zra): Add integration tests when they no longer rely on Client=.
 }