[webkit-reviews] review requested: [Bug 83396] [chromium] Avoid deleting impl tree when becoming invisible : [Attachment 136070] Patch

[bugzilla-daemon at webkit.org]

James Robinson <jamesr at chromium.org> has asked	for review:
Bug 83396: [chromium] Avoid deleting impl tree when becoming invisible
https://bugs.webkit.org/show_bug.cgi?id=83396

Attachment 136070: Patch
https://bugs.webkit.org/attachment.cgi?id=136070&action=review