[Webkit-unassigned] [Bug 123973] New: nextBoundary and previousBoundary are very slow when there is a password field

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=123973

           Summary: nextBoundary and previousBoundary are very slow when
                    there is a password field
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: BlinkMergeCandidate
          Severity: Normal
          Priority: P2
         Component: HTML Editing
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org
                CC: darin at apple.com, koivisto at iki.fi,
                    mrobinson at webkit.org, enrica at apple.com,
                    akling at apple.com


Merge https://chromium.googlesource.com/chromium/blink/+/57366eec5e3edea54062d4e74c0e047f8681dbad

When iterating through DOM nodes nextBoundary and previousBoundary
convert the contents of nodes using text security to a sequence of 'x'
characters. The SimplifiedBackwardsTextIterator and TextIterator may
iterate past node boundaries. Before this patch, the transformation was
done looking at the starting node rather than the current node. In some
situations, this replaced all boundaries with 'x' and caused the
iterator to continue iterating and transforming until the extent of the
document.

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