This adds support for detecting globals created by these helpers, as well as a
rule to enforce their use over the older XPConnect variants.
The latter rule also supports fixing code to use the newer variants, and will
be used in the next part to rewrite in-tree ESLint-enabled code that fails it.
MozReview-Commit-ID: 6Bgo6ohQA5j
--HG--
extra : rebase_source : feca0a0ed339420ea19faa1f6614e6253f0c840e
extra : absorb_source : d32d3d23fbd2c7dcae082375a1f9a61766b04b75
extra : histedit_source : 83cebb4f3eb66a79d38ee5412a5739d0c603425b
b78186b970