Linux: set the process title (that shows in "ps" etc.) of renderers correctly when using the zygote.

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.
+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_