ref: c8773416fbce8a04489a9d7dd3a96ec4cee0d3d4
dir: /third_party/libwebm/README.webm/
URL: https://chromium.googlesource.com/webm/libwebm Version: 630a0e3c338e1b32bddf513a2dad807908d2976a License: BSD License File: LICENSE.txt Description: libwebm is used to handle WebM container I/O.