--- a/third_party/webrtc/api/audio/audio_frame.cc	2018-02-15 07:08:02.000000000 -0400
+++ b/third_party/webrtc/api/audio/audio_frame.cc	2018-02-15 14:40:34.536836946 -0400
@@ -8,6 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
+#include <cstring>
+
 #include "api/audio/audio_frame.h"
 
 #include "rtc_base/checks.h"