Have ElementTraversal / NodeTraversal's next() methods take a reference

Source/core/html/HTMLTextFormControlElement.cpp

Index: Source/core/html/HTMLTextFormControlElement.cpp
diff --git a/Source/core/html/HTMLTextFormControlElement.cpp b/Source/core/html/HTMLTextFormControlElement.cpp
index 10c589e13c5efbb1626aaf74bc0ace4995905092..7f2ecff02672a19fd4f4ef962521ec1a0d0c57fc 100644
--- a/Source/core/html/HTMLTextFormControlElement.cpp
+++ b/Source/core/html/HTMLTextFormControlElement.cpp
@@ -445,7 +445,7 @@ PassRefPtr<Range> HTMLTextFormControlElement::selection() const
     int offset = 0;
     Node* startNode = 0;
     Node* endNode = 0;
-    for (Node* node = innerText->firstChild(); node; node = NodeTraversal::next(node, innerText)) {
+    for (Node* node = innerText->firstChild(); node; node = NodeTraversal::next(*node, innerText)) {
         ASSERT(!node->firstChild());
         ASSERT(node->isTextNode() || node->hasTagName(brTag));
         int length = node->isTextNode() ? lastOffsetInNode(node) : 1;
@@ -538,7 +538,7 @@ String HTMLTextFormControlElement::innerTextValue() const
         return emptyString();
 
     StringBuilder result;
-    for (Node* node = innerText; node; node = NodeTraversal::next(node, innerText)) {
+    for (Node* node = innerText; node; node = NodeTraversal::next(*node, innerText)) {
         if (node->hasTagName(brTag))
             result.append(newlineCharacter);
         else if (node->isTextNode())
@@ -585,7 +585,7 @@ String HTMLTextFormControlElement::valueWithHardLineBreaks() const
     getNextSoftBreak(line, breakNode, breakOffset);
 
     StringBuilder result;
-    for (Node* node = innerText->firstChild(); node; node = NodeTraversal::next(node, innerText)) {
+    for (Node* node = innerText->firstChild(); node; node = NodeTraversal::next(*node, innerText)) {
         if (node->hasTagName(brTag))
             result.append(newlineCharacter);
         else if (node->isTextNode()) {