[webkit-reviews] review requested: [Bug 158597] Add testing support for 3x device scale factor. : [Attachment 280977] Patch

[bugzilla-daemon at webkit.org]

zalan <zalan at apple.com> has asked  for review:
Bug 158597: Add testing support for 3x device scale factor.
https://bugs.webkit.org/show_bug.cgi?id=158597

Attachment 280977: Patch

https://bugs.webkit.org/attachment.cgi?id=280977&action=review