Summary: The HTML Microdata API was removed from the spec due to lack of
implementor interest. See
<
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22783>. Our
implementation of it breaks some pages (due to the itemId attributes it
adds) and is a bunch of code. I would like to remove it.
Tracking bug:
https://bugzilla.mozilla.org/show_bug.cgi?id=909633
Target release: 49
I believe I've removed all our in-browser dependencies on this stuff. I
haven't really checked addons because unfortunately the property names
this thing uses (e.g. "properties", "itemId") are way too common. :(
-Boris