Move mojo\shell to services\shell

mojo/shell/runner/host/child_process_base.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/runner/host/child_process_base.h"
-
-#include "base/logging.h"
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/message_loop/message_loop.h"
-#include "base/single_thread_task_runner.h"
-#include "base/synchronization/waitable_event.h"
-#include "base/threading/thread.h"
-#include "mojo/edk/embedder/embedder.h"
-#include "mojo/edk/embedder/process_delegate.h"
-#include "mojo/shell/runner/common/client_util.h"
-
-namespace mojo {
-namespace shell {
-
-namespace {
-
-// Should be created and initialized on the main thread and kept alive as long
-// a Mojo application is running in the current process.
-class ScopedAppContext : public edk::ProcessDelegate {
- public:
-  ScopedAppContext()
-      : io_thread_("io_thread"), wait_for_shutdown_event_(true, false) {
-    // Initialize Mojo before starting any threads.
-    edk::Init();
-
-    // Create and start our I/O thread.
-    base::Thread::Options io_thread_options(base::MessageLoop::TYPE_IO, 0);
-    CHECK(io_thread_.StartWithOptions(io_thread_options));
-    io_runner_ = io_thread_.task_runner().get();
-    CHECK(io_runner_.get());
-
-    edk::InitIPCSupport(this, io_runner_);
-    edk::SetParentPipeHandleFromCommandLine();
-  }
-
-  ~ScopedAppContext() override {
-    edk::ShutdownIPCSupport();
-    wait_for_shutdown_event_.Wait();
-  }
-
- private:
-  // ProcessDelegate implementation.
-  void OnShutdownComplete() override {
-    wait_for_shutdown_event_.Signal();
-  }
-
-  base::Thread io_thread_;
-  scoped_refptr<base::SingleThreadTaskRunner> io_runner_;
-
-  // Used to unblock the main thread on shutdown.
-  base::WaitableEvent wait_for_shutdown_event_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedAppContext);
-};
-
-}  // namespace
-
-void ChildProcessMain(const RunCallback& callback) {
-  DCHECK(!base::MessageLoop::current());
-
-  ScopedAppContext app_context;
-  callback.Run(GetShellClientRequestFromCommandLine());
-}
-
-}  // namespace shell
-}  // namespace mojo