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

Source/core/editing/EditingStyle.cpp

 /*
  * Copyright (C) 2007, 2008, 2009 Apple Computer, Inc.
  * Copyright (C) 2010, 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 694 matching lines @@
 TriState EditingStyle::triStateOfStyle(const VisibleSelection& selection) const
 {
     if (!selection.isCaretOrRange())
         return FalseTriState;
 
     if (selection.isCaret())
         return triStateOfStyle(EditingStyle::styleAtSelectionStart(selection).get());
 
     TriState state = FalseTriState;
     bool nodeIsStart = true;
-    for (Node* node = selection.start().deprecatedNode(); node; node = NodeTraversal::next(node)) {
+    for (Node* node = selection.start().deprecatedNode(); node; node = NodeTraversal::next(*node)) {
         if (node->renderer() && node->rendererIsEditable()) {
             RefPtr<CSSComputedStyleDeclaration> nodeStyle = CSSComputedStyleDeclaration::create(node);
             if (nodeStyle) {
                 TriState nodeState = triStateOfStyle(nodeStyle.get(), node->isTextNode() ? EditingStyle::DoNotIgnoreTextOnlyProperties : EditingStyle::IgnoreTextOnlyProperties);
                 if (nodeIsStart) {
                     state = nodeState;
                     nodeIsStart = false;
                 } else if (state != nodeState && node->isTextNode()) {
                     state = MixedTriState;
                     break;
@@ skipping 567 matching lines @@
     Node* node = position.deprecatedNode();
     if (!node)
         return NaturalWritingDirection;
 
     Position end;
     if (selection.isRange()) {
         end = selection.end().upstream();
 
         ASSERT(end.document());
         Node* pastLast = Range::create(*end.document(), position.parentAnchoredEquivalent(), end.parentAnchoredEquivalent())->pastLastNode();
-        for (Node* n = node; n && n != pastLast; n = NodeTraversal::next(n)) {
+        for (Node* n = node; n && n != pastLast; n = NodeTraversal::next(*n)) {
             if (!n->isStyledElement())
                 continue;
 
             RefPtr<CSSComputedStyleDeclaration> style = CSSComputedStyleDeclaration::create(n);
             RefPtr<CSSValue> unicodeBidi = style->getPropertyCSSValue(CSSPropertyUnicodeBidi);
             if (!unicodeBidi || !unicodeBidi->isPrimitiveValue())
                 continue;
 
             CSSValueID unicodeBidiValue = toCSSPrimitiveValue(unicodeBidi.get())->getValueID();
             if (unicodeBidiValue == CSSValueEmbed || unicodeBidiValue == CSSValueBidiOverride)
@@ skipping 336 matching lines @@
 {
     for (Node* ancestor = node; ancestor; ancestor = ancestor->parentNode()) {
         RefPtr<CSSComputedStyleDeclaration> ancestorStyle = CSSComputedStyleDeclaration::create(ancestor);
         if (!hasTransparentBackgroundColor(ancestorStyle.get()))
             return ancestorStyle->getPropertyCSSValue(CSSPropertyBackgroundColor);
     }
     return 0;
 }
 
 }