[css-tables] Set ancestor widths dirty when row border width changes

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

Index: third_party/WebKit/Source/core/layout/LayoutTableRow.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutTableRow.cpp b/third_party/WebKit/Source/core/layout/LayoutTableRow.cpp
index cc800331100f484e9f021dd638b8e549bd1c5241..9fd494408f0514348a4bfcf40a6429e57452141e 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTableRow.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutTableRow.cpp
@@ -81,13 +81,19 @@ void LayoutTableRow::styleDidChange(StyleDifference diff, const ComputedStyle* o
             // If the border width changes on a row, we need to make sure the cells in the row know to lay out again.
             // This only happens when borders are collapsed, since they end up affecting the border sides of the cell
             // itself.
-            table->setPreferredLogicalWidthsDirty(MarkOnlyThis);
             for (LayoutBox* childBox = firstChildBox(); childBox; childBox = childBox->nextSiblingBox()) {
                 if (!childBox->isTableCell())
                     continue;
                 childBox->setChildNeedsLayout();
                 childBox->setPreferredLogicalWidthsDirty(MarkOnlyThis);
             }
+            // Most table componenents can rely on LayoutObject::styleDidChange
+            // to mark the container chain dirty. But LayoutTableSection seems
+            // to never clear its dirty bit, which stops the propagation. So
+            // anything under LayoutTableSection has to restart the propagation
+            // at the table.
+            // TODO(dgrogan): Make LayoutTableSection clear its dirty bit.
+            table->setPreferredLogicalWidthsDirty();
         }
     }
 }