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Frederic Wang authored
See https://groups.google.com/forum/#!topic/mozilla.dev.platform/70NFnet82cU This commit introduces a new mathml.xlink.disabled option to disable support for XLink attributes on MathML elements together with a use counter and deprecation warning when support is enabled. For now, support is only disabled in Nighly. In the past, we relied on custom MathML deprecation warnings but those are removed here. Corresponding tests for these legacy warning messages are also removed from test_bug553917.html. link-1.xhtml is run with XLink support enabled (since it check xlink:href) while browser_contentAltClick.js is updated to check whether XLink has any effect on MathML, depending on whether the option is enabled. Differential Revision: https://phabricator.services.mozilla.com/D43332 --HG-- extra : moz-landing-system : lando
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