[webkit-reviews] review requested: [Bug 131213] [iOS WebKit2] Mark back buffers purgeable when they're not being painted frequently : [Attachment 228581] patch

[bugzilla-daemon at webkit.org]

Tim Horton <thorton at apple.com> has asked  for review:
Bug 131213: [iOS WebKit2] Mark back buffers purgeable when they're not being
painted frequently
https://bugs.webkit.org/show_bug.cgi?id=131213

Attachment 228581: patch
https://bugs.webkit.org/attachment.cgi?id=228581&action=review