[Webkit-unassigned] [Bug 117771] New: Updating background-blend-mode from script does not trigger a redraw

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=117771

           Summary: Updating background-blend-mode from script does not
                    trigger a redraw
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: BlinkMergeCandidate
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org
                CC: krit at webkit.org, jochen at chromium.org, mitica at adobe.com


Consider merging https://chromium.googlesource.com/chromium/blink/+/cf358a890433593c49fdc7ddc7b9fcc99880d19f

[CSS Blending] Updating background-blend-mode from script does not trigger a redraw
When the background-blend-mode property is set from CSS, and you update it from script,
the element is not redrawn.

The problem was caused by the equal operated in FillLayer which incorrectly checked
whether the blend mode is set, instead of the actual blend mode.

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