Oilpan: Completely move core/animations/ to oilpan's heap

Source/core/animation/TimedItem.idl

 /*
  * 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 12 matching lines @@
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 [
     RuntimeEnabled=WebAnimationsAPI,
+    WillBeGarbageCollected,
 ] interface TimedItem {
     // Playback state
     readonly attribute double? localTime;
     readonly attribute unsigned long? currentIteration;
 
     // Calculated timing
     readonly attribute double startTime;
     readonly attribute double duration;
     readonly attribute double activeDuration;
     readonly attribute double endTime;
 
     readonly attribute Timing timing;
     readonly attribute AnimationPlayer? player;
 };