Intent to Unship: `intl.tsf.enabled` pref

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Masayuki Nakano

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Mar 23, 2025, 9:45:28 PM3/23/25

to dev-pl...@mozilla.org, Makoto Kato, Masatoshi Kimura

Summary: Get rid of the pref which can disable TSF mode on Windows. In these days, TSF is used to retrieve active tab's URL and whether it's in the private browsing mode by Windows. If TSF is disabled, Windows will enable the a11y module to retrieve the URL. That causes creating the full a11y tree and getting the performance much worse. Therefore, we should not allow to users to disable TSF anymore.

Note that if you concern the privacy issue which Windows system retrieves URL of the active tab, you can make Gecko always return empty string to TSF with `intl.tsf.expose_url.allowed` pref.

Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1953694

Specification: N/A

Preference: intl.tsf.enabled

web-platform-tests: N/A

-- 
Masayuki Nakano <masa...@d-toybox.com>
Working on DOM, Events, editor and IME handling for Gecko

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