Properly handle unmanaged processes in mojo::shell:ChildProcessHost

mojo/shell/runner/host/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 MOJO_SHELL_RUNNER_HOST_CHILD_PROCESS_HOST_H_
 #define MOJO_SHELL_RUNNER_HOST_CHILD_PROCESS_HOST_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 63 matching lines @@
   void ExitNow(int32_t exit_code);
 
  protected:
   void DidStart(const ProcessReadyCallback& callback);
 
  private:
   void DoLaunch();
 
   void AppCompleted(int32_t result);
 
+  // If |true|, the hosted process is neither launched nor owned by this
+  // ChildProcessHost.
+  bool external_process_ = false;
+
   scoped_refptr<base::TaskRunner> launch_process_runner_;
   NativeRunnerDelegate* delegate_;
   bool start_sandboxed_;
   Identity target_;
   const base::FilePath app_path_;
   base::Process child_process_;
   // Used for the ChildController binding.
   edk::PlatformChannelPair platform_channel_pair_;
   mojom::ChildControllerPtr controller_;
   mojom::ChildController::StartAppCallback on_app_complete_;
@@ skipping 11 matching lines @@
 
   base::WeakPtrFactory<ChildProcessHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildProcessHost);
 };
 
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_RUNNER_HOST_CHILD_PROCESS_HOST_H_