ref: 5dccce558c9e5a77e19a794e0cca1f7c918dbe6c
dir: /third_party/libwebm/README.libvpx/
URL: https://chromium.googlesource.com/webm/libwebm Version: 2dec09426ab62b794464cc9971bd135b4d313e65 License: BSD License File: LICENSE.txt Description: libwebm is used to handle WebM container I/O.