Migrate WTF::HashSet::add() to ::insert() [part 1 of N]

third_party/WebKit/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 "core/paint/TableSectionPainter.h"
 
 #include "core/layout/LayoutTableCell.h"
 #include "core/layout/LayoutTableCol.h"
 #include "core/layout/LayoutTableRow.h"
 #include "core/paint/BoxClipper.h"
@@ skipping 293 matching lines @@
                                            paintOffset);
       for (unsigned c = dirtiedColumns.start(); c < dirtiedColumns.end(); c++) {
         if (c >= m_layoutTableSection.numCols(r))
           break;
         const LayoutTableSection::CellStruct& current =
             m_layoutTableSection.cellAt(r, c);
         for (LayoutTableCell* cell : current.cells) {
           if (overflowingCells.contains(cell))
             continue;
           if (cell->rowSpan() > 1 || cell->colSpan() > 1) {
-            if (!spanningCells.add(cell).isNewEntry)
+            if (!spanningCells.insert(cell).isNewEntry)
               continue;
           }
           cells.push_back(cell);
         }
       }
     }
 
     // Sort the dirty cells by paint order.
     if (!overflowingCells.size())
       std::stable_sort(cells.begin(), cells.end(), compareCellPositions);
@@ skipping 80 matching lines @@
                                      m_layoutTableSection.styleRef());
   } else {
     // TODO(wangxianzhu): Calculate the inset shadow bounds by insetting
     // paintRect by half widths of collapsed borders.
     BoxPainter::paintInsetBoxShadow(paintInfo, paintRect,
                                     m_layoutTableSection.styleRef());
   }
 }
 
 }  // namespace blink