Remove some unused files

webrtc/rtc_base/ignore_wundef.h

@@ -1,33 +0,0 @@
-/*
- *  Copyright (c) 2016 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 RTC_BASE_IGNORE_WUNDEF_H_
-#define RTC_BASE_IGNORE_WUNDEF_H_
-
-// If a header file uses #if on possibly undefined macros (and it's for some
-// reason not possible to just fix the header file), include it like this:
-//
-//   RTC_PUSH_IGNORING_WUNDEF()
-//   #include "misbehaving_header.h"
-//   RTC_POP_IGNORING_WUNDEF()
-//
-// This will cause the compiler to not emit -Wundef warnings for that file.
-
-#ifdef __clang__
-#define RTC_PUSH_IGNORING_WUNDEF() \
-  _Pragma("clang diagnostic push") \
-      _Pragma("clang diagnostic ignored \"-Wundef\"")
-#define RTC_POP_IGNORING_WUNDEF() _Pragma("clang diagnostic pop")
-#else
-#define RTC_PUSH_IGNORING_WUNDEF()
-#define RTC_POP_IGNORING_WUNDEF()
-#endif  // __clang__
-
-#endif  // RTC_BASE_IGNORE_WUNDEF_H_

webrtc/rtc_base/meson.build

@@ -15,7 +15,6 @@ base_sources = [
   'string_utils.cc',
   'strings/string_builder.cc',
   'synchronization/sequence_checker_internal.cc',
-  'synchronization/yield.cc',
   'synchronization/yield_policy.cc',
   'system/file_wrapper.cc',
   'system_time.cc',

webrtc/rtc_base/synchronization/yield.cc

@@ -1,36 +0,0 @@
-/*
- *  Copyright 2020 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.
- */
-
-#include "rtc_base/synchronization/yield.h"
-
-#if defined(WEBRTC_WIN)
-#include <windows.h>
-#else
-#include <sched.h>
-#include <time.h>
-#endif
-
-namespace webrtc {
-
-void YieldCurrentThread() {
-  // TODO(bugs.webrtc.org/11634): use dedicated OS functionality instead of
-  // sleep for yielding.
-#if defined(WEBRTC_WIN)
-  ::Sleep(0);
-#elif defined(WEBRTC_MAC) && defined(RTC_USE_NATIVE_MUTEX_ON_MAC) && \
-    !RTC_USE_NATIVE_MUTEX_ON_MAC
-  sched_yield();
-#else
-  static const struct timespec ts_null = {0};
-  nanosleep(&ts_null, nullptr);
-#endif
-}
-
-}  // namespace webrtc

webrtc/rtc_base/synchronization/yield.h

@@ -1,20 +0,0 @@
-/*
- *  Copyright 2020 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 RTC_BASE_SYNCHRONIZATION_YIELD_H_
-#define RTC_BASE_SYNCHRONIZATION_YIELD_H_
-
-namespace webrtc {
-
-// Request rescheduling of threads.
-void YieldCurrentThread();
-
-}  // namespace webrtc
-
-#endif  // RTC_BASE_SYNCHRONIZATION_YIELD_H_

webrtc/rtc_base/system/unused.h

@@ -1,28 +0,0 @@
-/*
- *  Copyright (c) 2018 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 RTC_BASE_SYSTEM_UNUSED_H_
-#define RTC_BASE_SYSTEM_UNUSED_H_
-
-// Prevent the compiler from warning about an unused variable. For example:
-//   int result = DoSomething();
-//   RTC_DCHECK(result == 17);
-//   RTC_UNUSED(result);
-// Note: In most cases it is better to remove the unused variable rather than
-// suppressing the compiler warning.
-#ifndef RTC_UNUSED
-#ifdef __cplusplus
-#define RTC_UNUSED(x) static_cast<void>(x)
-#else
-#define RTC_UNUSED(x) (void)(x)
-#endif
-#endif  // RTC_UNUSED
-
-#endif  // RTC_BASE_SYSTEM_UNUSED_H_