[webkit-reviews] review requested: [Bug 71225] [chromium] composited layers are blurry with a zoom-in page scale factor : [Attachment 113663] Patch

[bugzilla-daemon at webkit.org]

Hin-Chung Lam <hclam at google.com> has asked  for review:
Bug 71225: [chromium] composited layers are blurry with a zoom-in page scale
factor
https://bugs.webkit.org/show_bug.cgi?id=71225

Attachment 113663: Patch
https://bugs.webkit.org/attachment.cgi?id=113663&action=review

------- Additional Comments from Hin-Chung Lam <hclam at google.com>
I've added one more test to cover position:fixed in iframe.

I also added a virtual method to LayerChromium to determine if the layer needs
content scaling. For example doing content scaling with ImageLayerChromium is
bad because it's slower to do it in software, but for TiledLayerChromium for
regular content content scaling is needed for the best quality.