Adds new logging type SYSLOG which logs to the system log.

base/syslog_logging.h

Index: base/syslog_logging.h
diff --git a/base/syslog_logging.h b/base/syslog_logging.h
new file mode 100644
index 0000000000000000000000000000000000000000..4cdb4c13f88ea41826aef278dd8b4393ae1045e1
--- /dev/null
+++ b/base/syslog_logging.h
@@ -0,0 +1,38 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.

[brettw, 2016/09/14 22:33:48]

The new copyright block has no "(c)" and "2016" :)

[pastarmovj, 2016/09/15 21:27:10]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_SYSLOG_LOGGING_H_
+#define BASE_SYSLOG_LOGGING_H_
+
+#include "base/logging.h"
+
+namespace logging {
+
+// Keep in mind that the syslog is always active regardless of the logging level
+// and applied flags. Use only for important information that a system
+// administrator might need to maintain the browser installation.
+#define SYSLOG_STREAM(severity) \
+  COMPACT_GOOGLE_LOG_EX_ ## severity(EventLogMessage).stream()
+#define SYSLOG(severity) \
+  SYSLOG_STREAM(severity)
+
+// Creates a formatted message on the system event log. That would be the
+// Application Event log on Windows and the messages log file on POSIX systems.
+class BASE_EXPORT EventLogMessage {
+ public:
+  EventLogMessage(const char* file, int line, LogSeverity severity);
+
+  ~EventLogMessage();
+
+  std::ostream& stream() { return log_message_.stream(); }
+
+ private:
+  LogMessage log_message_;
+
+  DISALLOW_COPY_AND_ASSIGN(EventLogMessage);
+};
+
+}  // namespace logging
+
+#endif  // BASE_SYSLOG_LOGGING_H_