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

third_party/WebKit/Source/core/frame/PlatformEventDispatcher.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/frame/PlatformEventDispatcher.h"
 
 #include "core/frame/PlatformEventController.h"
 #include "wtf/AutoReset.h"
 
 namespace blink {
 
 PlatformEventDispatcher::PlatformEventDispatcher()
     : m_isDispatching(false), m_isListening(false) {}
 
 void PlatformEventDispatcher::addController(
     PlatformEventController* controller) {
   ASSERT(controller);
   // TODO: If we can avoid to register a same controller twice, we can change
   // this 'if' to ASSERT.
   if (m_controllers.contains(controller))
     return;
 
-  m_controllers.add(controller);
+  m_controllers.insert(controller);
 
   if (!m_isListening) {
     startListening();
     m_isListening = true;
   }
 }
 
 void PlatformEventDispatcher::removeController(
     PlatformEventController* controller) {
   ASSERT(m_controllers.contains(controller));
@@ skipping 25 matching lines @@
     stopListening();
     m_isListening = false;
   }
 }
 
 DEFINE_TRACE(PlatformEventDispatcher) {
   visitor->trace(m_controllers);
 }
 
 }  // namespace blink