Fixed YouTube.
Split 'common/' into commit '944804ccaca57df0527b949970548f03d43374a0'

git-subtree-dir: common
git-subtree-mainline: 632a013f62a1b839ce7e7d06b70d2eef7abba839
git-subtree-split: 944804ccaca57df0527b949970548f03d43374a0