Have LiveNodeListBase::ownerNode() return a reference

Source/core/html/HTMLTableElement.cpp

Index: Source/core/html/HTMLTableElement.cpp
diff --git a/Source/core/html/HTMLTableElement.cpp b/Source/core/html/HTMLTableElement.cpp
index e86b339c884eb6af3902077ea8a73ac872a1c3ad..0fba3c47fe25cfb4cc86bead61045962f8aa1bb8 100644
--- a/Source/core/html/HTMLTableElement.cpp
+++ b/Source/core/html/HTMLTableElement.cpp
@@ -195,10 +195,10 @@ PassRefPtr<HTMLElement> HTMLTableElement::insertRow(int index, ExceptionState& e
     RefPtr<HTMLTableRowElement> lastRow = nullptr;
     RefPtr<HTMLTableRowElement> row = nullptr;
     if (index == -1)
-        lastRow = HTMLTableRowsCollection::lastRow(this);
+        lastRow = HTMLTableRowsCollection::lastRow(*this);
     else {
         for (int i = 0; i <= index; ++i) {
-            row = HTMLTableRowsCollection::rowAfter(this, lastRow.get());
+            row = HTMLTableRowsCollection::rowAfter(*this, lastRow.get());
             if (!row) {
                 if (i != index) {
                     exceptionState.throwDOMException(IndexSizeError, "The index provided (" + String::number(index) + ") is greater than the number of rows in the table (" + String::number(i) + ").");
@@ -239,10 +239,10 @@ void HTMLTableElement::deleteRow(int index, ExceptionState& exceptionState)
     HTMLTableRowElement* row = 0;
     int i = 0;
     if (index == -1)
-        row = HTMLTableRowsCollection::lastRow(this);
+        row = HTMLTableRowsCollection::lastRow(*this);
     else {
         for (i = 0; i <= index; ++i) {
-            row = HTMLTableRowsCollection::rowAfter(this, row);
+            row = HTMLTableRowsCollection::rowAfter(*this, row);
             if (!row)
                 break;
         }