blink::PropertyTreeManager
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bridges Blink property trees → cc property trees. Given Blink’s Transform/Clip/Effect/Scroll nodes (from paint property trees), this class creates/updates the cc counterparts (cc::TransformNode, cc::ClipNode, cc::EffectNode, cc::ScrollNode) and associates them with the layers PaintArtifactCompositor builds. This is the last Blink stop before cc consumes the state. (cr-rev.appspot.com) Representative responsibilities Map Blink TransformPaintPropertyNode/Clip.../Effect.../Scroll... into cc nodes with stable IDs; Update viewport related properties (inner/outer viewport transform/clip) on the cc side. (Chromium Git Repositories)
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