[css-tables] Mark sibling cells dirty when a cell is removed

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

Index: third_party/WebKit/Source/core/layout/LayoutTableCell.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutTableCell.cpp b/third_party/WebKit/Source/core/layout/LayoutTableCell.cpp
index 3469d4abc189a54d4964cd1e3a3e42f8a862488f..eb1a8260179b81039b035d7b71c08e89f7762374 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTableCell.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutTableCell.cpp
@@ -66,6 +66,26 @@ void LayoutTableCell::willBeRemovedFromTree()
     LayoutBlockFlow::willBeRemovedFromTree();
 
     section()->setNeedsCellRecalc();
+
+    // When borders collapse, removing a cell can affect the the width of neighboring cells.
+    if (!parent())
+        return;
+    LayoutTable* enclosingTable = table();
+    DCHECK(enclosingTable);
+    if (!enclosingTable->collapseBorders())
+        return;
+    if (previousCell()) {
+        // TODO(dgrogan): Should this be setChildNeedsLayout or setNeedsLayout?
+        // remove-cell-with-border-box.html only passes with setNeedsLayout but other places
+        // use setChildNeedsLayout.
+        previousCell()->setNeedsLayout(LayoutInvalidationReason::TableChanged);
+        previousCell()->setPreferredLogicalWidthsDirty();
+    }
+    if (nextCell()) {
+        // TODO(dgrogan): Same as above re: setChildNeedsLayout vs setNeedsLayout.
+        nextCell()->setNeedsLayout(LayoutInvalidationReason::TableChanged);
+        nextCell()->setPreferredLogicalWidthsDirty();
+    }
 }
 
 unsigned LayoutTableCell::parseColSpanFromDOM() const