Merge 35441 - Linux: use readlink() and prctl() in SetProcTitle() to fix "exe...

base/setproctitle_linux.h

 // Copyright (c) 2009 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_SETPROCTITLE_LINUX_H_
 #define BASE_SETPROCTITLE_LINUX_H_
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 // Set the process title that will show in "ps" and similar tools. Takes
 // printf-style format string and arguments. After calling setproctitle()
-// the original main() argv[] array should not be used.
+// the original main() argv[] array should not be used. By default, the
+// original argv[0] is prepended to the format; this can be disabled by
+// including a '-' as the first character of the format string.
 void setproctitle(const char* fmt, ...);
 
 // Initialize state needed for setproctitle() on Linux. Pass the argv pointer
 // from main() to setproctitle_init() before calling setproctitle().
 void setproctitle_init(char** main_argv);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif  // BASE_SETPROCTITLE_LINUX_H_