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

third_party/WebKit/Source/core/animation/animatable/AnimatableValueKeyframe.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/animation/animatable/AnimatableValueKeyframe.h"
 
 #include "core/animation/LegacyStyleInterpolation.h"
 
 namespace blink {
 
 AnimatableValueKeyframe::AnimatableValueKeyframe(
     const AnimatableValueKeyframe& copyFrom)
     : Keyframe(copyFrom.m_offset, copyFrom.m_composite, copyFrom.m_easing) {
   for (PropertyValueMap::const_iterator iter =
            copyFrom.m_propertyValues.begin();
        iter != copyFrom.m_propertyValues.end(); ++iter)
     setPropertyValue(iter->key, iter->value.get());
 }
 
 PropertyHandleSet AnimatableValueKeyframe::properties() const {
   // This is not used in time-critical code, so we probably don't need to
   // worry about caching this result.
   PropertyHandleSet properties;
   for (PropertyValueMap::const_iterator iter = m_propertyValues.begin();
        iter != m_propertyValues.end(); ++iter)
-    properties.add(PropertyHandle(*iter.keys()));
+    properties.insert(PropertyHandle(*iter.keys()));
   return properties;
 }
 
 PassRefPtr<Keyframe> AnimatableValueKeyframe::clone() const {
   return adoptRef(new AnimatableValueKeyframe(*this));
 }
 
 PassRefPtr<Keyframe::PropertySpecificKeyframe>
 AnimatableValueKeyframe::createPropertySpecificKeyframe(
     const PropertyHandle& property) const {
@@ skipping 18 matching lines @@
 
 PassRefPtr<Keyframe::PropertySpecificKeyframe>
 AnimatableValueKeyframe::PropertySpecificKeyframe::neutralKeyframe(
     double offset,
     PassRefPtr<TimingFunction> easing) const {
   return create(offset, std::move(easing), AnimatableValue::neutralValue(),
                 EffectModel::CompositeAdd);
 }
 
 }  // namespace blink