include what you use: errno.h and string.h in base/

base/process/kill_mac.cc

 // Copyright (c) 2013 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.
 
 #include "base/process/kill.h"
 
+#include <errno.h>
 #include <signal.h>
 #include <sys/event.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 
 #include "base/files/file_util.h"
 #include "base/files/scoped_file.h"
 #include "base/logging.h"
 #include "base/posix/eintr_wrapper.h"
 
@@ skipping 146 matching lines @@
   }
 }
 
 }  // namespace
 
 void EnsureProcessTerminated(Process process) {
   WaitForChildToDie(process.Pid(), kWaitBeforeKillSeconds);
 }
 
 }  // namespace base