[Webkit-unassigned] [Bug 119053] New: Rewrite parseFrameSetListOfDimension to match HTML5

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=119053

           Summary: Rewrite parseFrameSetListOfDimension to match HTML5
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: BlinkMergeCandidate
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org
                CC: hyatt at apple.com, mjs at apple.com, jchaffraix at webkit.org,
                    simon.fraser at apple.com, thorton at apple.com


Consider merging https://chromium.googlesource.com/chromium/blink/+/ac7e5c0cbc39fa3899dc556af24157e71a7d789b

HTML5 defines the "rules for parsing a list of dimensions" in section
2.4.4.6. Those rules are very close to our legacy code with a couple
of differences:
- For inputs with only leading spaces and a unit, HTML5 return 0 with
the specified unit. The old code would return (1, Relative).
- HTML5 allow doubles for every units and not just percentage.

The 2 new behaviors are more consistent with the author's intent (and
are corner cases) so the compatibility risk of this change is small.

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