NEW 192284
EditorState code triggers additional layer flushes 
https://bugs.webkit.org/show_bug.cgi?id=192284
Summary EditorState code triggers additional layer flushes
Simon Fraser (smfr)
Reported 2018-12-01 20:58:47 PST
There are two code paths that trigger compositing layer flushes that would otherwise not happen; this may cause extra painting, which has a perf cost. They are WebPage::sendPartialEditorStateAndSchedulePostLayoutUpdate() and WebPage::sendEditorStateUpdate(). I see these get called when running this Speedometer subtest: http://browserbench.org/Speedometer2.0/?suite=VueJS-TodoMVC&iterationCount=100
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