IWYU: errno.h in third_party/webrtc_overrides

third_party/webrtc_overrides/webrtc/base/logging.h

 // Copyright 2015 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.
 
 // This file overrides the logging macros in WebRTC (webrtc/base/logging.h).
 // Instead of using WebRTC's logging implementation, the WebRTC macros are
 // mapped to DIAGNOSTIC_LOGING. In it's implementation (DiagnosticLogMessage in
 // third_party/webrtc_overrides/webrtc/base/logging.h), the corresponding
 // base/logging.h macros (e.g. Chromium's VLOG) are used.
 // If this file is included outside of WebRTC/libjingle it should be included
@@ skipping 15 matching lines @@
 
 #include "third_party/webrtc_overrides/webrtc/base/diagnostic_logging.h"
 
 //////////////////////////////////////////////////////////////////////
 // WebRTC macros which in DiagnosticLogMessage are mapped over to
 // their VLOG equivalent in base/logging.h.
 //////////////////////////////////////////////////////////////////////
 
 #if defined(LOGGING_INSIDE_WEBRTC)
 
+#include <errno.h>
+
 namespace rtc {
 
 // Note that |N| is the size *with* the null terminator.
 bool CheckVlogIsOnHelper(LoggingSeverity severity,
                          const char* file, size_t N);
 
 template <size_t N>
 bool CheckVlogIsOn(LoggingSeverity severity, const char (&file)[N]) {
   return CheckVlogIsOnHelper(severity, file, N);
 }
@@ skipping 38 matching lines @@
 #define LOG_ERR(sev) LOG_ERRNO(sev)
 #define LAST_SYSTEM_ERROR (errno)
 #endif  // OS_WIN
 
 #undef PLOG
 #define PLOG(sev, err) LOG_ERR_EX(sev, err)
 
 #endif  // LOGGING_INSIDE_WEBRTC
 
 #endif  // THIRD_PARTY_WEBRTC_OVERRIDES_WEBRTC_BASE_LOGGING_H_