ozone: Remove the libevent message-pump.
The ozone message-pump is no longer needed. So remove that, and use the default
message-pump based on libevent instead. Also, add a convenience method for
adding a watcher on a file-descriptor to the message-pump from the message-loop.
BUG=354062
R=rjkroege@chromium.org, sky@chromium.org
TBR=darin@chromium.org
Review URL: https://codereview.chromium.org/231643005
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@263022 0039d316-1c4b-4281-b951-d872f2087c98
CrOS-Libchrome-Original-Commit: ef1a61b3ca42b158068c27e722630d881eb5fa1e
5 files changed