Implement a paint offset cache for slimming paint v2

Source/core/paint/TableSectionPainter.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/TableSectionPainter.h"
 
 #include "core/layout/LayoutTable.h"
 #include "core/layout/LayoutTableCell.h"
 #include "core/layout/LayoutTableCol.h"
@@ skipping 22 matching lines @@
 
     LayoutPoint adjustedPaintOffset = paintOffset + m_layoutTableSection.location();
     {
         BoxClipper boxClipper(m_layoutTableSection, paintInfo, adjustedPaintOffset, ForceContentsClip);
         paintObject(paintInfo, adjustedPaintOffset);
     }
 
     if ((paintInfo.phase == PaintPhaseOutline || paintInfo.phase == PaintPhaseSelfOutline) && m_layoutTableSection.style()->visibility() == VISIBLE) {
         LayoutRect visualOverflowRect(m_layoutTableSection.visualOverflowRect());
         visualOverflowRect.moveBy(adjustedPaintOffset);
-        ObjectPainter(m_layoutTableSection).paintOutline(paintInfo, LayoutRect(adjustedPaintOffset, m_layoutTableSection.size()), visualOverflowRect);
+        ObjectPainter(m_layoutTableSection).paintOutline(paintInfo, LayoutRect(adjustedPaintOffset, m_layoutTableSection.size()), visualOverflowRect, adjustedPaintOffset);
     }
 }
 
 static inline bool compareCellPositions(LayoutTableCell* elem1, LayoutTableCell* elem2)
 {
     return elem1->rowIndex() < elem2->rowIndex();
 }
 
 // This comparison is used only when we have overflowing cells as we have an unsorted array to sort. We thus need
 // to sort both on rows and columns to properly issue paint invalidations.
@@ skipping 115 matching lines @@
         LayoutTableCol* column = m_layoutTableSection.table()->colElement(cell->col());
         LayoutTableCol* columnGroup = column ? column->enclosingColumnGroup() : 0;
 
         bool columnHasBackground = column && column->hasBackground();
         bool columnGroupHasBackground = columnGroup && columnGroup->hasBackground();
         bool sectionHasBackground = m_layoutTableSection.hasBackground();
         bool rowHasBackground = row->hasBackground();
 
         if (columnHasBackground || columnGroupHasBackground || sectionHasBackground || rowHasBackground) {
             TableCellPainter tableCellPainter(*cell);
-            if (!LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, *cell, paintPhase)) {
-                LayoutObjectDrawingRecorder recorder(*paintInfo.context, *cell, paintPhase, tableCellPainter.paintBounds(cellPoint, TableCellPainter::AddOffsetFromParent));
+            if (!LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, *cell, paintPhase, paintOffset)) {
+                LayoutObjectDrawingRecorder recorder(*paintInfo.context, *cell, paintPhase, tableCellPainter.paintBounds(cellPoint, TableCellPainter::AddOffsetFromParent), paintOffset);
                 // Column groups and columns first.
                 // FIXME: Columns and column groups do not currently support opacity, and they are being painted "too late" in
                 // the stack, since we have already opened a transparency layer (potentially) for the table row group.
                 // Note that we deliberately ignore whether or not the cell has a layer, since these backgrounds paint "behind" the
                 // cell.
                 if (columnGroupHasBackground)
                     tableCellPainter.paintBackgroundsBehindCell(paintInfo, cellPoint, columnGroup);
                 if (columnHasBackground)
                     tableCellPainter.paintBackgroundsBehindCell(paintInfo, cellPoint, column);
 
                 // Paint the row group next.
                 if (sectionHasBackground)
                     tableCellPainter.paintBackgroundsBehindCell(paintInfo, cellPoint, &m_layoutTableSection);
 
                 // Paint the row next, but only if it doesn't have a layer. If a row has a layer, it will be responsible for
                 // painting the row background for the cell.
                 if (rowHasBackground && !row->hasSelfPaintingLayer())
                     tableCellPainter.paintBackgroundsBehindCell(paintInfo, cellPoint, row);
             }
         }
     }
     if ((!cell->hasSelfPaintingLayer() && !row->hasSelfPaintingLayer()))
         cell->paint(paintInfo, cellPoint);
 }
 
 } // namespace blink