Delete PaintInvalidationState. It's unused.

sky/engine/core/rendering/RenderBox.cpp

Index: sky/engine/core/rendering/RenderBox.cpp
diff --git a/sky/engine/core/rendering/RenderBox.cpp b/sky/engine/core/rendering/RenderBox.cpp
index fa2aa90bf36ec62c17c76ffe4ee38db2369a2493..95e27c337853033607c9f9d50c779f0733dbc8d0 100644
--- a/sky/engine/core/rendering/RenderBox.cpp
+++ b/sky/engine/core/rendering/RenderBox.cpp
@@ -1036,19 +1036,11 @@ LayoutUnit RenderBox::containingBlockLogicalHeightForContent(AvailableLogicalHei
     return containingBlock()->availableLogicalHeight(heightType);
 }
 
-void RenderBox::mapLocalToContainer(const RenderLayerModelObject* paintInvalidationContainer, TransformState& transformState, MapCoordinatesFlags mode, const PaintInvalidationState* paintInvalidationState) const
+void RenderBox::mapLocalToContainer(const RenderLayerModelObject* paintInvalidationContainer, TransformState& transformState, MapCoordinatesFlags mode) const
 {
     if (paintInvalidationContainer == this)
         return;
 
-    if (paintInvalidationState && paintInvalidationState->canMapToContainer(paintInvalidationContainer)) {
-        LayoutSize offset = paintInvalidationState->paintOffset() + locationOffset();
-        if (style()->hasInFlowPosition() && layer())
-            offset += layer()->offsetForInFlowPosition();
-        transformState.move(offset);
-        return;
-    }
-
     bool containerSkipped;
     RenderObject* o = container(paintInvalidationContainer, &containerSkipped);
     if (!o)