[Webkit-unassigned] [Bug 51262] WebPageProxy should delete its backing store after not painting for a while

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=51262





--- Comment #46 from Adam Roben (:aroben) <aroben at apple.com>  2011-03-03 13:03:09 PST ---
The WebKit2/ResizeViewWhileHidden API test asks the view to resize while hidden (duh). When this happens, the web process ends up sending back a DidUpdateBackingStoreState message with an empty update area (since painting is suspended). When the UI process receives this messsage, it updates its backing store state ID, but doesn't allocate a new backing store (since there's nothing to blit into it). This later confuses us when we don't have a backing store but our backing store state ID is up-to-date.

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