libchromeos: revert add process control library, syslog logging capability, and run unit tests

chromeos/syslog_logging.h

-// Copyright (c) 2011 The Chromium OS 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 CHROMEOS_SYSLOG_LOGGING_H_
-#define CHROMEOS_SYSLOG_LOGGING_H_
-
-#include <string>
-
-namespace chromeos {
-
-enum InitFlags {
-  kLogToSyslog = 1,
-  kLogToStderr = 2
-};
-
-// Initialize logging subsystem.  |flags| indicates
-void InitLog(int init_flags);
-// Convenience function for configuring syslog via openlog.  Users
-// could call openlog directly except for naming collisions between
-// base/logging.h and syslog.h.  Similarly users cannot pass the
-// normal parameters so we pick a representative set.  |log_pid|
-// causes pid to be logged with |ident|.
-void OpenLog(const char* ident, bool log_pid);
-// Start accumulating the logs to a string.  This is inefficient, so
-// do not set to true if large numbers of log messages are coming.
-// Accumulated logs are only ever cleared when the clear function ings
-// called.
-void LogToString(bool enabled);
-// Get the accumulated logs as a string.
-std::string GetLog();
-// Clear the accumulated logs.
-void ClearLog();
-// Returns true if the accumulated log contains the given string.  Useful
-// for testing.
-bool FindLog(const char* string);
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_SYSLOG_LOGGING_H_