WIP: Skeleton for paint offset caching

Source/core/paint/ReplacedPainter.cpp

Index: Source/core/paint/ReplacedPainter.cpp
diff --git a/Source/core/paint/ReplacedPainter.cpp b/Source/core/paint/ReplacedPainter.cpp
index 6571e9cbda2b0db4bfa1ebb9a49069ce9781a8ad..fbadae1e4e6e2fe69e4b44b0aa141a590ff9a0de 100644
--- a/Source/core/paint/ReplacedPainter.cpp
+++ b/Source/core/paint/ReplacedPainter.cpp
@@ -41,7 +41,7 @@ void ReplacedPainter::paint(const PaintInfo& paintInfo, const LayoutPoint& paint
 
     if (paintInfo.phase == PaintPhaseOutline || paintInfo.phase == PaintPhaseSelfOutline) {
         if (m_layoutReplaced.styleRef().outlineWidth())
-            ObjectPainter(m_layoutReplaced).paintOutline(paintInfo, paintRect, visualOverflowRect);
+            ObjectPainter(m_layoutReplaced).paintOutline(paintInfo, paintRect, visualOverflowRect, adjustedPaintOffset);
         return;
     }
 
@@ -89,12 +89,12 @@ void ReplacedPainter::paint(const PaintInfo& paintInfo, const LayoutPoint& paint
     // The selection tint never gets clipped by border-radius rounding, since we want it to run right up to the edges of
     // surrounding content.
     bool drawSelectionTint = paintInfo.phase == PaintPhaseForeground && m_layoutReplaced.selectionState() != SelectionNone && !paintInfo.isPrinting();
-    if (drawSelectionTint && !LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, m_layoutReplaced, DisplayItem::SelectionTint)) {
+    if (drawSelectionTint && !LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, m_layoutReplaced, DisplayItem::SelectionTint, paintOffset)) {
         LayoutRect selectionPaintingRect = m_layoutReplaced.localSelectionRect();
         selectionPaintingRect.moveBy(adjustedPaintOffset);
         IntRect selectionPaintingIntRect = pixelSnappedIntRect(selectionPaintingRect);
 
-        LayoutObjectDrawingRecorder drawingRecorder(*paintInfo.context, m_layoutReplaced, DisplayItem::SelectionTint, selectionPaintingIntRect);
+        LayoutObjectDrawingRecorder drawingRecorder(*paintInfo.context, m_layoutReplaced, DisplayItem::SelectionTint, selectionPaintingIntRect, paintOffset);
         paintInfo.context->fillRect(selectionPaintingIntRect, m_layoutReplaced.selectionBackgroundColor());
     }
 }