Merge AppChildProcessHost into ChildProcessHost.

shell/app_child_process_host.h

-// 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.
-
-#ifndef SHELL_APP_CHILD_PROCESS_HOST_H_
-#define SHELL_APP_CHILD_PROCESS_HOST_H_
-
-#include <stdint.h>
-
-#include "base/macros.h"
-#include "mojo/edk/embedder/channel_info_forward.h"
-#include "mojo/public/cpp/bindings/error_handler.h"
-#include "shell/app_child_process.mojom.h"
-#include "shell/child_process_host.h"
-
-namespace mojo {
-namespace shell {
-
-// A subclass of |ChildProcessHost| to host an app child process, which runs a
-// single app (loaded from the file system).
-//
-// Note: After |Start()|, |StartApp| must be called and this object must
-// remained alive until the |on_app_complete| callback is called.
-class AppChildProcessHost : public ChildProcessHost, public ErrorHandler {
- public:
-  explicit AppChildProcessHost(Context* context);
-  ~AppChildProcessHost() override;
-
-  // See |AppChildController::StartApp()| (this may only be called after
-  // |Start()|). Note, however, one difference: |on_app_complete| will *always*
-  // get called, even on connection error (or even if the child process failed
-  // to start at all).
-  void StartApp(const String& app_path,
-                bool clean_app_path,
-                InterfaceRequest<Application> application_request,
-                const AppChildController::StartAppCallback& on_app_complete);
-  // See |AppChildController::ExitNow()|.
-  void ExitNow(int32_t exit_code);
-
-  // |ChildProcessHost| methods:
-  void WillStart() override;
-  void DidStart(bool success) override;
-
-  // |ErrorHandler| methods:
-  void OnConnectionError() override;
-
- private:
-  // Callback for |embedder::CreateChannel()|.
-  void DidCreateChannel(embedder::ChannelInfo* channel_info);
-
-  void AppCompleted(int32_t result);
-
-  AppChildControllerPtr controller_;
-  embedder::ChannelInfo* channel_info_;
-  AppChildController::StartAppCallback on_app_complete_;
-
-  DISALLOW_COPY_AND_ASSIGN(AppChildProcessHost);
-};
-
-}  // namespace shell
-}  // namespace mojo
-
-#endif  // SHELL_APP_CHILD_PROCESS_HOST_H_