Summary: See D6895. We currenty whitelist one of the DOM classes, but should whitelist them all. Classes not in this whitelist raise warnings when users who don't have the corresponding extensions installed lint code. We don't want to require you to install every extension just to send diffs, so we whitelist stuff that we know would exist if you did install everything.
Test Plan: bwahaha
Reviewers: btrahan, Firehed
Reviewed By: Firehed
CC: aran
Differential Revision: https://secure.phabricator.com/D6896
Summary: Just like we ship with a list of extension functions, add a list of extension classes so people stop getting lint errors about DOMDocument just because some linter uses it.
Test Plan: Ran "arc lint".
Reviewers: vrana, btrahan, codeblock
Reviewed By: vrana
CC: aran
Differential Revision: https://secure.phabricator.com/D3082
