[Webkit-unassigned] [Bug 109866] Should not create backing store for frame borders

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=109866





--- Comment #2 from Tien-Ren Chen <trchen at chromium.org>  2013-02-14 14:57:53 PST ---
Verified that <iframe> no longer generate unnecessary tiles for border.

All layout tests look nice. (with GraphicsLayer::drawsContent differences, and 2 pixel tests with sub-pixel difference)

<frame> is trickier since we still need backing on the main frame (which is just the <frameset>) to paint the borders. It is still better than creating separate backing for each frame.

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