Linux: refactor zygote support

base/reserved_file_descriptors.h

Index: base/reserved_file_descriptors.h
diff --git a/base/reserved_file_descriptors.h b/base/reserved_file_descriptors.h
deleted file mode 100644
index 5236a085fa6a0cf8e5118d32f7adb3c8ee7fc764..0000000000000000000000000000000000000000
--- a/base/reserved_file_descriptors.h
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright (c) 2006-2009 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_RESERVED_FILE_DESCRIPTORS_H_
-#define BASE_RESERVED_FILE_DESCRIPTORS_H_
-
-#if defined(OS_POSIX)
-
-// Chrome uses predefined file descriptors to communicate with child processes.
-// Normally this is a private contract between code that does fork/exec and the
-// code it invokes, but in zygote mode, things get a little more interesting.
-// It's a huge layering violation for this to be in base, but
-// logging and ZygoteManager need kReservedFileDescriptors, so there.
-
-enum GlobalReservedFds {
-  // Classic unix file descriptors.
-  // Let's leave them alone even if we don't use them.
-  kStdinFd = 0,
-  kStdoutFd = 1,
-  kStderrFd = 2,
-
-  // See chrome/common/ipc_channel_posix.cc
-  kClientChannelFd = 3,
-
-  // See chrome/app/breakpad_linux.cc and
-  // chrome/browser/renderer_host/browser_render_process_host.cc
-  kMagicCrashSignalFd = 4,
-
-  // One plus highest fd mentioned in this enum.
-  kReservedFds = 5
-};
-
-#endif
-
-#endif