[Webkit-unassigned] [Bug 92569] New: Ignore visibility:hidden elements when computing compositing layer bounds

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=92569

           Summary: Ignore visibility:hidden elements when computing
                    compositing layer bounds
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: simon.fraser at apple.com
                CC: jamesr at chromium.org, enne at google.com,
                    cmuppala at apple.com


Google maps has some elements with crazy offsets:

<img style="position: absolute; left: 44940px; top: 15013px; width: 19px; height: 19px; -webkit-user-select: none; border: 0px; padding: 0px; margin: 0px; z-index: 0; visibility: hidden; " crossorigin="" src="//maps.gstatic.com/mapfiles/markers2/dd-via-transparent.png" class="gmnoprint" log="miw" id="mtgt_ddwnew">

<img style="width: 11px; height: 11px; -webkit-user-select: none; border: 0px; padding: 0px; margin: 0px; position: absolute; left: 44944px; top: 15017px; z-index: 0; visibility: hidden; " crossorigin="" src="//maps.gstatic.com/mapfiles/markers2/dd-via.png">

These cause us to create crazy-big layers when getting directions (at least on iOS).We should ignore visibility:hidden layers when computing composited layer bounds.

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