[webkit-dev] Can't build Chromium Linux

Both my Chromium Linux boxes are getting this compile error, which doesn't seem to be showing up on the bots: WebKit/chromium/third_party/ffmpeg/patched-ffmpeg-mt/libavcodec/libvpxdec.c:27: fatal error: vpx/vpx_decoder.h: No such file or directory This is preventing the chromium-ews from running. Anyone know what's going on? Adam