Gentoo's Bugzilla –
Attachment 598398 Details for
Bug 701954[atom overlay] dev-util/electron-3.1.8 - ../../third_party/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc:720:25: error: no member named 'height' in 'vpx_codec_cx_pkt::(anonymous struct at /usr/include/vpx/vpx_encoder.h:173:5)'