[webkit-reviews] review requested: [Bug 112865] Add setting for fixed root background compositing. : [Attachment 194305] Patch

[bugzilla-daemon at webkit.org]

vollick at chromium.org has asked	for review:
Bug 112865: Add setting for fixed root background compositing.
https://bugs.webkit.org/show_bug.cgi?id=112865

Attachment 194305: Patch
https://bugs.webkit.org/attachment.cgi?id=194305&action=review

------- Additional Comments from vollick at chromium.org
There were a number of places in RenderLayerBacking where I had been checking
if
we *could* be using a fixed root background layer rather than if we *were*
using
one. Updating these checks should ensure no change in behavior when the setting
is off. As a consequence, the failing layout tests are now unaffected by the
new code and pass (at least locally).