Use c++11 range loops in accessibility

Source/modules/accessibility/AXTable.cpp

Index: Source/modules/accessibility/AXTable.cpp
diff --git a/Source/modules/accessibility/AXTable.cpp b/Source/modules/accessibility/AXTable.cpp
index 74879851737676b11d69c470fa48bb56833e2eaa..3d78232442b9c0283c3643c4c2d15a9852ecd5b4 100644
--- a/Source/modules/accessibility/AXTable.cpp
+++ b/Source/modules/accessibility/AXTable.cpp
@@ -521,7 +521,7 @@ AXTableCell* AXTable::cellForColumnAndRow(unsigned column, unsigned row)
     // Iterate backwards through the rows in case the desired cell has a rowspan and exists in a previous row.
     for (unsigned rowIndexCounter = row + 1; rowIndexCounter > 0; --rowIndexCounter) {
         unsigned rowIndex = rowIndexCounter - 1;
-        const AccessibilityChildrenVector& children = m_rows[rowIndex]->children();
+        const auto& children = m_rows[rowIndex]->children();
         // Since some cells may have colspans, we have to check the actual range of each
         // cell to determine which is the right one.
         for (unsigned colIndexCounter = std::min(static_cast<unsigned>(children.size()), column + 1); colIndexCounter > 0; --colIndexCounter) {