Add logging to remote commands

base/chromeos/logging.h

Index: base/chromeos/logging.h
diff --git a/base/chromeos/logging.h b/base/chromeos/logging.h
new file mode 100644
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+++ b/base/chromeos/logging.h
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+// Copyright 2016 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 BASE_CHROMEOS_LOGGING_H_
+#define BASE_CHROMEOS_LOGGING_H_
+
+#include "base/logging.h"
+
+namespace logging {
+
+#if defined(OS_CHROMEOS)
+
+// These macros are used to log events on ChromeOS which we want to be included
+// in the system log of the device.
+#define CHROMEOS_SYSLOG(severity) LOG(severity)
+#define CHROMEOS_SYSLOG_IF(severity, condition) LOG_IF(severity, condition)
+
+#else  // Not defined(OS_CHROMEOS)
+
+#define CHROMEOS_SYSLOG(severity) LOG_IF(severity, false)
+#define CHROMEOS_SYSLOG_IF(severity, condition) LOG_IF(severity, false)
+
+#endif  // defined(OS_CHROMEOS)
+
+}  // namespace logging
+
+#endif  // BASE_CHROMEOS_LOGGING_H_