Use HeapHashCountedSet for AnimationPlayerCountedSet

Source/core/animation/ActiveAnimations.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 26 matching lines @@
 
 ActiveAnimations::~ActiveAnimations()
 {
 #if !ENABLE(OILPAN)
     for (size_t i = 0; i < m_animations.size(); ++i)
         m_animations[i]->notifyElementDestroyed();
     m_animations.clear();
 #endif
 }
 
-void ActiveAnimations::addPlayer(AnimationPlayer* player)
-{
-    ++m_players.add(player, 0).storedValue->value;
-}
-
-void ActiveAnimations::removePlayer(AnimationPlayer* player)
-{
-    AnimationPlayerCountedSet::iterator it = m_players.find(player);
-    ASSERT(it != m_players.end());
-    ASSERT(it->value > 0);
-    --it->value;
-    if (!it->value)
-        m_players.remove(it);
-}
-
 void ActiveAnimations::updateAnimationFlags(RenderStyle& style)
 {
     for (AnimationPlayerCountedSet::const_iterator it = m_players.begin(); it != m_players.end(); ++it) {
         const AnimationPlayer& player = *it->key;
         ASSERT(player.source());
         // FIXME: Needs to consider AnimationGroup once added.
         ASSERT(player.source()->isAnimation());
         const Animation& animation = *toAnimation(player.source());
         if (animation.isCurrent()) {
             if (animation.affects(CSSPropertyOpacity))
@@ skipping 22 matching lines @@
 void ActiveAnimations::trace(Visitor* visitor)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_cssAnimations);
     visitor->trace(m_defaultStack);
     visitor->trace(m_players);
 #endif
 }
 
 } // namespace blink