[Webkit-unassigned] [Bug 88380] New: Revert verticalPositionForBox to int

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=88380

           Summary: Revert verticalPositionForBox to int
           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: eae at chromium.org
                CC: eric at webkit.org, leviw at chromium.org


Revert verticalPositionForBox to integers to ensure consistent alignment. Currently the vertical position for boxes inside a line is computed as a LayoutUnit and then pixel snapped at rendering time. This can cause the alignment on subsequent lines to alter. By always rounding (flooring) the values the same way we ensure consistent alignment between lines.

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