ref: 4fffefe189a9123d4b04482c26a1be5eb632b397
dir: /third_party/libwebm/README.webm/
URL: https://chromium.googlesource.com/webm/libwebm Version: a7118d8ec564e9db841da1eb01f547f3229f240a License: BSD License File: LICENSE.txt Description: libwebm is used to handle WebM container I/O.