Use paginationStrut() instead of paginationStrutForRow()

There's no change in behaviour. Now that we setPaginationStrut() on the row,
we don't need to call paginationStrutForRow() outside of layout anymore.

BUG=642814
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_layout_tests_slimming_paint_v2

Review-Url: https://codereview.chromium.org/2389913002
Cr-Commit-Position: refs/heads/master@{#422858}

third_party/WebKit/Source/core/layout/LayoutTable.cpp

@@ -619,8 +619,7 @@ void LayoutTable::layout() {
         // Don't include any strut in the header group - we only want the height from its content.
         offsetForTableHeaders += section->logicalHeight();
         if (LayoutTableRow* row = section->firstRow())
-          offsetForTableHeaders -=
-              section->paginationStrutForRow(row, section->logicalTop());
+          offsetForTableHeaders -= row->paginationStrut();
         state.setHeightOffsetForTableHeaders(offsetForTableHeaders);
       }
     }

third_party/WebKit/Source/core/paint/TableSectionPainter.cpp

@@ -56,8 +56,7 @@ void TableSectionPainter::paintRepeatingHeaderGroup(
   // The header may have a pagination strut before it so we need to account for that when establishing its position.
   LayoutUnit headerGroupOffset = table->pageLogicalOffset();
   if (LayoutTableRow* row = m_layoutTableSection.firstRow())
-    headerGroupOffset += m_layoutTableSection.paginationStrutForRow(
-        row, table->pageLogicalOffset());
+    headerGroupOffset += row->paginationStrut();
   LayoutUnit offsetToNextPage =
       pageHeight - intMod(headerGroupOffset, pageHeight);
   paginationOffset.move(0, offsetToNextPage.toInt());