[css-tables] Don't use internal layout structure when iterating all rows

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

Index: third_party/WebKit/Source/core/layout/LayoutTableSection.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutTableSection.cpp b/third_party/WebKit/Source/core/layout/LayoutTableSection.cpp
index ff50a66cd30b031d284e70c3aeafdd6adfa44a03..b688d71ae1d43651ec015713a35d0dc3cc0546d7 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTableSection.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutTableSection.cpp
@@ -1227,10 +1227,7 @@ bool LayoutTableSection::recalcChildOverflowAfterStyleChange()
 
 void LayoutTableSection::markAllCellsWidthsDirtyAndOrNeedsLayout(WhatToMarkAllCells whatToMark)
 {
-    for (unsigned i = 0; i < numRows(); i++) {
-        LayoutTableRow* row = rowLayoutObjectAt(i);
-        if (!row)
-            continue;
+    for (LayoutTableRow* row = firstRow(); row; row = row->nextRow()) {
         for (LayoutTableCell* cell = row->firstCell(); cell; cell = cell->nextCell()) {
             cell->setPreferredLogicalWidthsDirty();
             if (whatToMark == MarkDirtyAndNeedsLayout)