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

third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.cpp

Index: third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.cpp
diff --git a/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.cpp b/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.cpp
index 2e525ba4da6790b1a34620f54a937f9447d0c803..525258e73ffd5fd3381924bcb7ff2de62456ce8d 100644
--- a/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.cpp
+++ b/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.cpp
@@ -186,7 +186,7 @@ void LayoutSVGResourceContainer::markClientForInvalidation(
 
 void LayoutSVGResourceContainer::addClient(LayoutObject* client) {
   ASSERT(client);
-  m_clients.add(client);
+  m_clients.insert(client);
   clearInvalidationMask();
 }
 
@@ -269,7 +269,7 @@ static inline void removeFromCacheAndInvalidateDependencies(
 
   for (SVGElement* element : *dependencies) {
     if (LayoutObject* layoutObject = element->layoutObject()) {
-      if (UNLIKELY(!invalidatingDependencies.add(element).isNewEntry)) {
+      if (UNLIKELY(!invalidatingDependencies.insert(element).isNewEntry)) {
         // Reference cycle: we are in process of invalidating this dependant.
         continue;
       }