WIP: Skeleton for paint offset caching

Source/core/paint/VideoPainter.cpp

Index: Source/core/paint/VideoPainter.cpp
diff --git a/Source/core/paint/VideoPainter.cpp b/Source/core/paint/VideoPainter.cpp
index 85d7d9d8f11ec98bebcc6b9a77233a2469cf7cae..8624fe930e40f5d7a336f26c1b8f2e04bf47c5aa 100644
--- a/Source/core/paint/VideoPainter.cpp
+++ b/Source/core/paint/VideoPainter.cpp
@@ -29,12 +29,12 @@ void VideoPainter::paintReplaced(const PaintInfo& paintInfo, const LayoutPoint&
     rect.moveBy(paintOffset);
 
     GraphicsContext* context = paintInfo.context;
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*context, m_layoutVideo, paintInfo.phase))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*context, m_layoutVideo, paintInfo.phase, paintOffset))
         return;
 
     LayoutRect contentRect = m_layoutVideo.contentBoxRect();
     contentRect.moveBy(paintOffset);
-    LayoutObjectDrawingRecorder drawingRecorder(*context, m_layoutVideo, paintInfo.phase, contentRect);
+    LayoutObjectDrawingRecorder drawingRecorder(*context, m_layoutVideo, paintInfo.phase, contentRect, paintOffset);
 
     bool clip = !contentRect.contains(rect);
     if (clip) {