I discovered this issue while working on bug 1374697 (had an off-by-one AtkRelationType error for the to-be-supported relations). After discussion in #accessibility, the conclusion was that we should add it to the RelationTypeMap even though it's not currently being used, rather than remove the relation type.
Created attachment 8880032 [details] [diff] [review] proposed patch
Assignee: nobody → jdiggs
Status: NEW → ASSIGNED
Attachment #8880032 - Flags: review?(surkov.alexander)
Attachment #8880032 - Flags: review?(surkov.alexander) → review+
Pushed by firstname.lastname@example.org: https://hg.mozilla.org/integration/mozilla-inbound/rev/211e6b6d2abc RelationType::CONTAINING_WINDOW is not in the RelationTypeMap. r=surkov
Status: ASSIGNED → RESOLVED
Last Resolved: a year ago
status-firefox56: --- → fixed
Resolution: --- → FIXED
Target Milestone: --- → mozilla56
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