[Webkit-unassigned] [Bug 91061] New: Incorrect rounding in ceiledLayoutUnit and roundedLayoutUnit

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=91061

           Summary: Incorrect rounding in ceiledLayoutUnit and
                    roundedLayoutUnit
           Product: WebKit
           Version: 420+
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: allan.jensen at nokia.com


When subpixel layout is enabled, the two functions ceiledLayoutUnit and roundedLayoutUnit  both returns the flooredLayoutUnit instead of ceiled or rounded values. 

The function FractionalUnit::fromFloatCeil was recently added to solve the same problem in updatePreferredWidth in RenderBlock.cpp, and can be reused to fix ceiledLayoutUnit.

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