WIP: Skeleton for paint offset caching

Source/core/paint/ReplacedPainter.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/paint/ReplacedPainter.h"
 
 #include "core/layout/LayoutReplaced.h"
 #include "core/layout/api/SelectionState.h"
 #include "core/paint/BoxPainter.h"
@@ skipping 23 matching lines @@
     if (paintInfo.phase == PaintPhaseMask) {
         m_layoutReplaced.paintMask(paintInfo, adjustedPaintOffset);
         return;
     }
 
     if (paintInfo.phase == PaintPhaseClippingMask && (!m_layoutReplaced.hasLayer() || !m_layoutReplaced.layer()->hasCompositedClippingMask()))
         return;
 
     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;
     }
 
     if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection && !m_layoutReplaced.canHaveChildren() && paintInfo.phase != PaintPhaseClippingMask)
         return;
 
     if (!paintInfo.shouldPaintWithinRoot(&m_layoutReplaced))
         return;
 
     if (paintInfo.phase == PaintPhaseSelection)
@@ skipping 27 matching lines @@
                 BoxPainter(m_layoutReplaced).paintClippingMask(paintInfo, adjustedPaintOffset);
             } else {
                 m_layoutReplaced.paintReplaced(paintInfo, adjustedPaintOffset);
             }
         }
     }
 
     // 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());
     }
 }
 
 } // namespace blink