[Webkit-unassigned] [Bug 117447] New: Allow removing empty childs even if !canCollapseAnonymousBlockChild()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=117447

           Summary: Allow removing empty childs even if
                    !canCollapseAnonymousBlockChild()
           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, simon.fraser at apple.com,
                    dino at apple.com, cbiesinger at chromium.org


Consider merging https://chromium.googlesource.com/chromium/blink/+/8f76a1a2fefcfdc62e7ca95cc7cd0dc4f4ad346b

The purpose of canCollapseAnonymousBlockChild is to prevent moving
non-block children to the parent of the anonymous block. However,
when there are no children, we still want to remove the empty block.

See http://trac.webkit.org/changeset/126071 for where the code got added
and the new test case for why this matters.

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