Remove dependency on m_previousPositionFromPaintInvalidationBacking for spv2

Source/core/paint/DeprecatedPaintLayer.cpp

Index: Source/core/paint/DeprecatedPaintLayer.cpp
diff --git a/Source/core/paint/DeprecatedPaintLayer.cpp b/Source/core/paint/DeprecatedPaintLayer.cpp
index a6910903494bb73eb9589e1e45d8fa037179bec1..04fc6d3dcf3aa410f1ab5a3a153157026db2d899 100644
--- a/Source/core/paint/DeprecatedPaintLayer.cpp
+++ b/Source/core/paint/DeprecatedPaintLayer.cpp
@@ -775,8 +775,11 @@ bool DeprecatedPaintLayer::updateLayerPosition()
     // FIXME: We'd really like to just get rid of the concept of a layer rectangle and rely on the layoutObjects.
     localPoint.moveBy(-inlineBoundingBoxOffset);
 
-    if (m_location != localPoint)
+    if (m_location != localPoint) {
         positionOrOffsetChanged = true;
+        if (RuntimeEnabledFeatures::slimmingPaintV2Enabled())
+            setNeedsRepaint();
+    }
     m_location = localPoint;
 
 #if ENABLE(ASSERT)