Remove mojo/shell and (most) service implementations

mojo/shell/in_process_dynamic_service_runner_unittest.cc

-// 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.
-
-#include "mojo/shell/context.h"
-#include "mojo/shell/in_process_dynamic_service_runner.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace mojo {
-namespace shell {
-
-TEST(InProcessDynamicServiceRunnerTest, NotStarted) {
-  Context context;
-  base::MessageLoop loop;
-  context.Init();
-  InProcessDynamicServiceRunner runner(&context);
-  // Shouldn't crash or DCHECK on destruction.
-}
-
-}  // namespace shell
-}  // namespace mojo