[Webkit-unassigned] [Bug 53546] New: When frame flattening is on iframe outside viewport is not flattened

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=53546

           Summary: When frame flattening is on iframe outside viewport is
                    not flattened
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Frames
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: Michael.Tyutyunik at nokia.com
                CC: hyatt at apple.com, kenneth at webkit.org


When frame flattening is on and page has an iframe which is partially visible or not visible at all this iframe is not flattened and contentsSize() reports incorrect value.

To reproduce enable the frame flattening, make the window small enough and load attached example. Depending on the size of your window iframe will be partially visible or not visible at all. When you scroll you can see that it's not flattened.

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