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

third_party/WebKit/Source/core/animation/KeyframeEffectModel.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:
  *
  *     * 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 31 matching lines @@
 #include "platform/transforms/TransformationMatrix.h"
 #include "wtf/PtrUtil.h"
 #include "wtf/text/StringHash.h"
 
 namespace blink {
 
 PropertyHandleSet KeyframeEffectModelBase::properties() const {
   PropertyHandleSet result;
   for (const auto& keyframe : m_keyframes) {
     for (const auto& property : keyframe->properties())
-      result.add(property);
+      result.insert(property);
   }
   return result;
 }
 
 void KeyframeEffectModelBase::setFrames(KeyframeVector& keyframes) {
   // TODO(samli): Should also notify/invalidate the animation
   m_keyframes = keyframes;
   m_keyframeGroups = nullptr;
   m_interpolationEffect.clear();
   m_lastFraction = std::numeric_limits<double>::quiet_NaN();
@@ skipping 254 matching lines @@
   }
   if (m_keyframes.back()->offset() != 1.0) {
     appendKeyframe(m_keyframes.back()->neutralKeyframe(1, nullptr));
     addedSyntheticKeyframe = true;
   }
 
   return addedSyntheticKeyframe;
 }
 
 }  // namespace blink