зеркало из https://github.com/mozilla/gecko-dev.git
f86b6c2086
I'm hoping this fixes (or at least helps with) this intermittent test failure (an intermittent test-timeout). Before this patch, the test did the following: it made a layout-impacting restyle, and then it registered a reflow observer, and then it waited for the previously-performed restyle to be flushed, which it then expects to cause a reflow and trigger the reflow observer. When the test times out and intermittently fails, it seems that the reflow observer is successfully registered but never fires. I'm guessing that's because the reflow is getting flushed eagerly for some reason, and happens *before* the reflow observer is registered. We can avoid this problem by holding off on the restyle until after the reflow observer has been registered; that's the approach that this patch takes. (Note that this reflow-observer API isn't web-exposed; it's an internal API that we use to report reflows in our devtools.) Differential Revision: https://phabricator.services.mozilla.com/D100517 |
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