Migrate WTF::HashSet::remove() to ::erase() [part 1]

third_party/WebKit/Source/core/dom/MutationObserver.cpp

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 145 matching lines @@
 
 void MutationObserver::observationStarted(
     MutationObserverRegistration* registration) {
   DCHECK(!m_registrations.contains(registration));
   m_registrations.insert(registration);
 }
 
 void MutationObserver::observationEnded(
     MutationObserverRegistration* registration) {
   DCHECK(m_registrations.contains(registration));
-  m_registrations.remove(registration);
+  m_registrations.erase(registration);
 }
 
 static MutationObserverSet& activeMutationObservers() {
   DEFINE_STATIC_LOCAL(MutationObserverSet, activeObservers,
                       (new MutationObserverSet));
   return activeObservers;
 }
 
 using SlotChangeList = HeapVector<Member<HTMLSlotElement>>;
 
@@ skipping 96 matching lines @@
 
 void MutationObserver::resumeSuspendedObservers() {
   DCHECK(isMainThread());
   if (suspendedMutationObservers().isEmpty())
     return;
 
   MutationObserverVector suspended;
   copyToVector(suspendedMutationObservers(), suspended);
   for (const auto& observer : suspended) {
     if (!observer->shouldBeSuspended()) {
-      suspendedMutationObservers().remove(observer);
+      suspendedMutationObservers().erase(observer);
       activateObserver(observer);
     }
   }
 }
 
 void MutationObserver::deliverMutations() {
   // These steps are defined in DOM Standard's "notify mutation observers".
   // https://dom.spec.whatwg.org/#notify-mutation-observers
   DCHECK(isMainThread());
 
@@ skipping 18 matching lines @@
 }
 
 DEFINE_TRACE(MutationObserver) {
   visitor->trace(m_callback);
   visitor->trace(m_records);
   visitor->trace(m_registrations);
   visitor->trace(m_callback);
 }
 
 }  // namespace blink