Remove unused libudev on Linux.

webrtc/media/devices/libudevsymboltable.h

-/*
- *  Copyright (c) 2004 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef WEBRTC_MEDIA_DEVICES_LIBUDEVSYMBOLTABLE_H_
-#define WEBRTC_MEDIA_DEVICES_LIBUDEVSYMBOLTABLE_H_
-
-#include <libudev.h>
-
-#include "webrtc/base/latebindingsymboltable.h"
-
-namespace cricket {
-
-#define LIBUDEV_SYMBOLS_CLASS_NAME LibUDevSymbolTable
-// The libudev symbols we need, as an X-Macro list.
-// This list must contain precisely every libudev function that is used in
-// linuxdevicemanager.cc.
-#define LIBUDEV_SYMBOLS_LIST \
-  X(udev_device_get_devnode) \
-  X(udev_device_get_parent_with_subsystem_devtype) \
-  X(udev_device_get_sysattr_value) \
-  X(udev_device_new_from_syspath) \
-  X(udev_device_unref) \
-  X(udev_enumerate_add_match_subsystem) \
-  X(udev_enumerate_get_list_entry) \
-  X(udev_enumerate_new) \
-  X(udev_enumerate_scan_devices) \
-  X(udev_enumerate_unref) \
-  X(udev_list_entry_get_name) \
-  X(udev_list_entry_get_next) \
-  X(udev_monitor_enable_receiving) \
-  X(udev_monitor_filter_add_match_subsystem_devtype) \
-  X(udev_monitor_get_fd) \
-  X(udev_monitor_new_from_netlink) \
-  X(udev_monitor_receive_device) \
-  X(udev_monitor_unref) \
-  X(udev_new) \
-  X(udev_unref)
-
-#define LATE_BINDING_SYMBOL_TABLE_CLASS_NAME LIBUDEV_SYMBOLS_CLASS_NAME
-#define LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST LIBUDEV_SYMBOLS_LIST
-#include "webrtc/base/latebindingsymboltable.h.def"
-#undef LATE_BINDING_SYMBOL_TABLE_CLASS_NAME
-#undef LATE_BINDING_SYMBOL_TABLE_SYMBOLS_LIST
-
-// libudev has changed ABIs to libudev.so.1 in recent distros and lots of users
-// and/or software (including Google Chrome) are symlinking the old to the new.
-// The entire point of ABI versions is that you can't safely do that, and
-// it has caused crashes in the wild. This function checks if the DllHandle that
-// we got back for libudev.so.0 is actually for libudev.so.1. If so, the library
-// cannot safely be used.
-bool IsWrongLibUDevAbiVersion(rtc::DllHandle libudev_0);
-
-}  // namespace cricket
-
-#endif  // WEBRTC_MEDIA_DEVICES_LIBUDEVSYMBOLTABLE_H_