Migrate WTF::LinkedHashSet/ListHashSet::add() to ::insert()

third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.cpp

Index: third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.cpp
diff --git a/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.cpp b/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.cpp
index e02e3d56ec6b5048d5842f0217ed8e96a01009fa..c9f7f26c3ae22ddc0fc923067889546e1db2eda9 100644
--- a/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.cpp
+++ b/third_party/WebKit/Source/platform/loader/fetch/ResourceFetcher.cpp
@@ -1075,7 +1075,7 @@ void ResourceFetcher::preloadStarted(Resource* resource) {
 
   if (!m_preloads)
     m_preloads = new HeapListHashSet<Member<Resource>>;
-  m_preloads->add(resource);
+  m_preloads->insert(resource);
 
   if (m_preloadedURLsForTest)
     m_preloadedURLsForTest->insert(resource->url().getString());