Shell: Remove the test child stuff.

shell/test_child_process.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 "shell/test_child_process.h"
-
-#include "base/bind.h"
-#include "base/location.h"
-#include "base/logging.h"
-#include "base/message_loop/message_loop.h"
-
-namespace mojo {
-namespace shell {
-
-TestChildProcess::TestChildProcess() {
-}
-
-TestChildProcess::~TestChildProcess() {
-}
-
-void TestChildProcess::Main() {
-  VLOG(2) << "TestChildProcess::Main()";
-
-  CHECK(!base::MessageLoop::current());
-}
-
-}  // namespace shell
-}  // namespace mojo