Implement a paint offset cache for slimming paint v2

Source/core/paint/ObjectPainter.cpp

Index: Source/core/paint/ObjectPainter.cpp
diff --git a/Source/core/paint/ObjectPainter.cpp b/Source/core/paint/ObjectPainter.cpp
index 96cb82c35d673eaf88a35ff9ceb1d164d6308b7c..e216ba2c050c1d59af0846c23bfe05449e2fd6f1 100644
--- a/Source/core/paint/ObjectPainter.cpp
+++ b/Source/core/paint/ObjectPainter.cpp
@@ -199,7 +199,7 @@ void ObjectPainter::paintOutline(const PaintInfo& paintInfo, const LayoutPoint&
     if (paintFocusRing && !LayoutTheme::theme().shouldDrawDefaultFocusRing(&m_layoutObject))
         return;
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, m_layoutObject, paintInfo.phase))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, m_layoutObject, paintInfo.phase, paintOffset))
         return;
 
     Vector<LayoutRect> outlineRects;
@@ -221,7 +221,7 @@ void ObjectPainter::paintOutline(const PaintInfo& paintInfo, const LayoutPoint&
 
     IntRect bounds = unitedOutlineRect;
     bounds.inflate(m_layoutObject.styleRef().outlineOutsetExtent());
-    LayoutObjectDrawingRecorder recorder(*paintInfo.context, m_layoutObject, paintInfo.phase, bounds);
+    LayoutObjectDrawingRecorder recorder(*paintInfo.context, m_layoutObject, paintInfo.phase, bounds, paintOffset);
 
     Color color = m_layoutObject.resolveColor(styleToUse, CSSPropertyOutlineColor);
     if (styleToUse.outlineStyleIsAuto()) {
@@ -265,10 +265,10 @@ void ObjectPainter::addPDFURLRectIfNeeded(const PaintInfo& paintInfo, const Layo
     if (rect.isEmpty())
         return;
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, m_layoutObject, DisplayItem::PrintedContentPDFURLRect))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, m_layoutObject, DisplayItem::PrintedContentPDFURLRect, paintOffset))
         return;
 
-    LayoutObjectDrawingRecorder recorder(*paintInfo.context, m_layoutObject, DisplayItem::PrintedContentPDFURLRect, rect);
+    LayoutObjectDrawingRecorder recorder(*paintInfo.context, m_layoutObject, DisplayItem::PrintedContentPDFURLRect, rect, paintOffset);
     if (url.hasFragmentIdentifier() && equalIgnoringFragmentIdentifier(url, m_layoutObject.document().baseURL())) {
         String fragmentName = url.fragmentIdentifier();
         if (m_layoutObject.document().findAnchor(fragmentName))