Jed Davis 8238831a2c Bug 1658474 - Remove the blocking mode of IPC's KillProcess function. r=mccr8,media-playback-reviewers,alwu,bryce
`base::KillProcess`, with the `wait` parameter set to true, does a
bounded blocking wait for the process to exit by polling and sleeping in
a loop, with ad-hoc parameters.  The only user of that case is the Gecko
Media Plugin code, which doesn't actually need it as discussed in bug
(comments 4-6); also, currently it's blocking the IPC I/O thread in the
parent process, which is not good for browser responsiveness.

Accordingly, this patch deletes that code and removes the parameter.

Differential Revision: https://phabricator.services.mozilla.com/D136662
2022-02-02 21:50:01 +00:00
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