Bug 1042887 - Move "overflow:auto" in SMS app from an element to its parent, to prevent flex-item min-content-based sizing from kicking in. r=fabrice
Merge pull request #22132 from dholbert/1042887-secondtry

Bug 1042887 - Move "overflow:auto" in SMS app from an element to its parent, to prevent flex-item min-content-based sizing from kicking in. r=fabrice