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

third_party/WebKit/Source/core/css/FontFaceSet.cpp

 /*
  * Copyright (C) 2013 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 214 matching lines @@
 }
 
 void FontFaceSet::addToLoadingFonts(FontFace* fontFace) {
   if (!m_isLoading) {
     m_isLoading = true;
     m_shouldFireLoadingEvent = true;
     if (m_ready->getState() != ReadyProperty::Pending)
       m_ready->reset();
     handlePendingEventsAndPromisesSoon();
   }
-  m_loadingFonts.add(fontFace);
+  m_loadingFonts.insert(fontFace);
   fontFace->addCallback(this);
 }
 
 void FontFaceSet::removeFromLoadingFonts(FontFace* fontFace) {
   m_loadingFonts.remove(fontFace);
   if (m_loadingFonts.isEmpty())
     handlePendingEventsAndPromisesSoon();
 }
 
 ScriptPromise FontFaceSet::ready(ScriptState* scriptState) {
@@ skipping 315 matching lines @@
   visitor->trace(m_failedFonts);
   visitor->trace(m_nonCSSConnectedFaces);
   visitor->trace(m_asyncRunner);
   EventTargetWithInlineData::trace(visitor);
   Supplement<Document>::trace(visitor);
   SuspendableObject::trace(visitor);
   FontFace::LoadFontCallback::trace(visitor);
 }
 
 }  // namespace blink