Cleanup zygote_main_linux.cc includes.

content/zygote/zygote_main_linux.cc

 // Copyright (c) 2012 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 "content/zygote/zygote_main.h"
 
 #include <dlfcn.h>
-#include <errno.h>
-#include <fcntl.h>
 #include <pthread.h>
-#include <stdio.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
+#include <string.h>
 #include <sys/types.h>
-#include <sys/wait.h>
 #include <unistd.h>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
-#include "base/callback.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
-#include "base/linux_util.h"
 #include "base/memory/scoped_vector.h"
 #include "base/native_library.h"
 #include "base/pickle.h"
-#include "base/posix/eintr_wrapper.h"
 #include "base/posix/unix_domain_socket_linux.h"
 #include "base/rand_util.h"
 #include "base/sys_info.h"
 #include "build/build_config.h"
 #include "content/common/child_process_sandbox_support_impl_linux.h"
 #include "content/common/font_config_ipc_linux.h"
 #include "content/common/pepper_plugin_list.h"
 #include "content/common/sandbox_linux/sandbox_linux.h"
 #include "content/common/zygote_commands_linux.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
 #include "content/public/common/pepper_plugin_info.h"
 #include "content/public/common/sandbox_linux.h"
 #include "content/public/common/zygote_fork_delegate_linux.h"
 #include "content/zygote/zygote_linux.h"
 #include "crypto/nss_util.h"
 #include "sandbox/linux/services/init_process_reaper.h"
 #include "sandbox/linux/services/libc_urandom_override.h"
 #include "sandbox/linux/suid/client/setuid_sandbox_client.h"
 #include "third_party/icu/source/i18n/unicode/timezone.h"
 #include "third_party/skia/include/ports/SkFontConfigInterface.h"
 
 #if defined(OS_LINUX)
-#include <sys/epoll.h>
 #include <sys/prctl.h>
-#include <sys/signal.h>
-#else
-#include <signal.h>
 #endif
 
 #if defined(ENABLE_WEBRTC)
 #include "third_party/libjingle/overrides/init_webrtc.h"
 #endif
 
 namespace content {
 
 // See http://code.google.com/p/chromium/wiki/LinuxZygote
 
@@ skipping 400 matching lines @@
   int sandbox_flags = linux_sandbox->GetStatus();
   bool setuid_sandbox_engaged = sandbox_flags & kSandboxLinuxSUID;
   CHECK_EQ(must_enable_setuid_sandbox, setuid_sandbox_engaged);
 
   Zygote zygote(sandbox_flags, fork_delegates.Pass());
   // This function call can return multiple times, once per fork().
   return zygote.ProcessRequests();
 }
 
 }  // namespace content