[Webkit-unassigned] [Bug 121124] New: Update SVGResourcesCache on SVG root insertion and removal

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=121124

           Summary: Update SVGResourcesCache on SVG root insertion and
                    removal
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: BlinkMergeCandidate
          Severity: Normal
          Priority: P2
         Component: SVG
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org
                CC: zimmermann at kde.org, pdr at google.com, thorton at apple.com


Consider merging https://chromium.googlesource.com/chromium/blink/+/0018f5ede8c39b6d63f7719dc0d5dcc8995b0004

SVG renderers update the SVGResourcesCache when children are added or
removed using the addChild and removeChild methods. The root SVG
renderer (RenderSVGRoot) may not properly update its own resources
cache because its parent will not go through the SVG
addChild/removeChild functions.

This patch updates RenderSVGRoot to hook insertedIntoTree and
willBeRemovedFromTree to update the resources cache for the root.

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