[Webkit-unassigned] [Bug 90039] New: Avoid calling GraphicsContext for 0px borders

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=90039

           Summary: Avoid calling GraphicsContext for 0px borders
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jchaffraix at webkit.org


There is no guarantee in our code that we wouldn't call GraphicsContext for a 0px border. Apart from being an unneeded overhead, it looks like we can end up painting the border on Chromium: the only repro I have involves painting to a PDF where Skia re-interprets the 0px border as a thin line.

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