Oilpan: Move CSSAnimations, CSSAnimationUpdate and ActiveAnimations to oilpan's heap

Source/core/dom/Element.cpp

Index: Source/core/dom/Element.cpp
diff --git a/Source/core/dom/Element.cpp b/Source/core/dom/Element.cpp
index 1833913e779fb098b83c36652c200fc56face347..c9fc162fd080b1619254a7fb0d9d5627097e3b71 100644
--- a/Source/core/dom/Element.cpp
+++ b/Source/core/dom/Element.cpp
@@ -385,7 +385,7 @@ ActiveAnimations& Element::ensureActiveAnimations()
 {
     ElementRareData& rareData = ensureElementRareData();
     if (!rareData.activeAnimations())
-        rareData.setActiveAnimations(adoptPtr(new ActiveAnimations()));
+        rareData.setActiveAnimations(adoptPtrWillBeNoop(new ActiveAnimations()));
     return *rareData.activeAnimations();
 }