Migrate WTF::HashSet::add() to ::insert() [part 1 of N]

third_party/WebKit/Source/core/svg/SVGLinearGradientElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 125 matching lines @@
 
 bool SVGLinearGradientElement::collectGradientAttributes(
     LinearGradientAttributes& attributes) {
   if (!layoutObject())
     return false;
 
   HeapHashSet<Member<SVGGradientElement>> processedGradients;
   SVGGradientElement* current = this;
 
   setGradientAttributes(current, attributes);
-  processedGradients.add(current);
+  processedGradients.insert(current);
 
   while (true) {
     // Respect xlink:href, take attributes from referenced element
     Node* refNode = SVGURIReference::targetElementFromIRIString(
         current->href()->currentValue()->value(), treeScope());
     if (refNode && isSVGGradientElement(*refNode)) {
       current = toSVGGradientElement(refNode);
 
       // Cycle detection
       if (processedGradients.contains(current))
         return true;
 
       if (!current->layoutObject())
         return false;
 
       setGradientAttributes(current, attributes,
                             isSVGLinearGradientElement(*current));
-      processedGradients.add(current);
+      processedGradients.insert(current);
     } else {
       return true;
     }
   }
 
   ASSERT_NOT_REACHED();
   return false;
 }
 
 bool SVGLinearGradientElement::selfHasRelativeLengths() const {
   return m_x1->currentValue()->isRelative() ||
          m_y1->currentValue()->isRelative() ||
          m_x2->currentValue()->isRelative() ||
          m_y2->currentValue()->isRelative();
 }
 
 }  // namespace blink