RESOLVED FIXED Bug 161911
Remove non-standard postMessage overload 
https://bugs.webkit.org/show_bug.cgi?id=161911
Summary Remove non-standard postMessage overload
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Add attachment proposed patch, testcase, etc.
Chris Dumez
Comment 1 2016-09-13 10:26:38 PDT
Looks like Safari is the only browser support the overload now. However, based on Chromium's intent to deprecate [1], usage is not that low (0.002%) and most usage is from Mac. [1] https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/h4ooaB_Y9JE/nh7vXshGBwAJ
PhistucK
Comment 2 2016-09-13 12:59:18 PDT
The Blink threshold is 0.02%, so this is well below the threshold (I understand that you may have a different threshold). Rick, can you share the macOS only percentage?
PhistucK
Comment 3 2016-09-13 13:02:54 PDT
Also, it looks like the general metric is even lower now (0.0012). https://www.chromestatus.com/metrics/feature/timeline/popularity/575
Sam Weinig
Comment 4 2016-12-05 16:14:05 PST
Fixed in r209303: <http://trac.webkit.org/changeset/209303>
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