Bug 1976779 - rsclientcerts: make each backend responsible for rate-limiting calls to find_objects r=jschanck
Before this patch, `rsclientcerts::manager` would rate-limit calls to
`find_objects` to once every 3 seconds because the underlying operation can be
time-consuming (in particular, on macOS and Windows, if there are many
certificates/keys available). On Android, keys aren't available until the user
selects one, which means that if a call to `find_objects` happened before the
selection prompt was shown (which is what happens) and the user chose one in
less than 3 seconds, the backend wouldn't search again, thus making it seem like
no keys were available, which would cause Firefox to not send a client
certificate. This patch makes each backend implementation responsible for this
rate-limiting, because only they know if it's appropriate to do so (in particular,
on Android, `find_objects` doesn't have the same performance concern as
on macOS and Windows because rather than searching for certificates and
keys, it asks `ClientAuthCertificateManager` for the cached list of certificates
and keys that have already been approved for use by the user).
Differential Revision: https://phabricator.services.mozilla.com/D257065
<!DOCTYPE html><html><head><metacharset="utf-8"/><title>[dir] and shadow slots: dir=auto on the shadow host, paragraph in the shadow tree</title><linkrel="author"title="Eric Meyer"href="mailto:emeyer@igalia.com"><linkrel="help"href="https://html.spec.whatwg.org/multipage/C#the-dir-attribute"><linkrel="help"href="https://github.com/whatwg/html/issues/3699"><linkrel="help"href="https://github.com/whatwg/html/pull/9796"><styletype="text/css">body{width:600px;}div{border:1pxsolidgray;margin:1em;}divp{width:50%;border:1pxdotted;}</style></head><body><p>`dir=auto` on the shadow host, paragraph in the shadow tree</p><divid="host"dir="ltr"><pdir="">اختبر.</p></div><pid="result">The HTML direction / computed CSS `direction` value for the paragraph is: ltr / ltr.</p></body></html>