(See go/owp-launch-guide for an overview)
MathML was disabled because the code is not production ready yet.
Changes to API surface:
Remove support for all MathML elements and rendering features.
Original bug for enabling in M24: https://code.google.com/p/chromium/issues/detail?id=152430
Public standards discussion:
Support in other browsers: current (expected)
Internet Explorer: No support, future unknown.
Opera: Partial support.
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