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

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

Index: third_party/WebKit/Source/core/svg/SVGRadialGradientElement.cpp
diff --git a/third_party/WebKit/Source/core/svg/SVGRadialGradientElement.cpp b/third_party/WebKit/Source/core/svg/SVGRadialGradientElement.cpp
index ce9fc398d8ebe925d0f10f46d0e676a6ccc41d77..b368ba24543eb067e99c6d5e7e7bcdb3ac4659bb 100644
--- a/third_party/WebKit/Source/core/svg/SVGRadialGradientElement.cpp
+++ b/third_party/WebKit/Source/core/svg/SVGRadialGradientElement.cpp
@@ -158,7 +158,7 @@ bool SVGRadialGradientElement::collectGradientAttributes(
   SVGGradientElement* current = this;
 
   setGradientAttributes(current, attributes);
-  processedGradients.add(current);
+  processedGradients.insert(current);
 
   while (true) {
     // Respect xlink:href, take attributes from referenced element
@@ -176,7 +176,7 @@ bool SVGRadialGradientElement::collectGradientAttributes(
 
       setGradientAttributes(current, attributes,
                             isSVGRadialGradientElement(*current));
-      processedGradients.add(current);
+      processedGradients.insert(current);
     } else {
       break;
     }