James Teh a1b5690620 Bug 1468128: Use an extra bit for the content process portion of MSAA unique ids. r=aklotz
This allows us to support 255 content processes instead of 127.
It also means we have 1 less bit for the Accessible portion of the id, which means we can support less Accessibles per process.
Hopefully, this shouldn't be a problem, especially with Fission generally meaning less documents per process.

Differential Revision: https://phabricator.services.mozilla.com/D104344
2021-09-15 02:21:11 +00:00
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