Oilpan: Introduce a dedicated heap for CSSValue and RenderObject

Source/platform/heap/ThreadState.h

Index: Source/platform/heap/ThreadState.h
diff --git a/Source/platform/heap/ThreadState.h b/Source/platform/heap/ThreadState.h
index 8b7db86abb749c60aef9b2ec9fb243b342c7fe93..21bbb209a9562d8009aed76c3b10bb6e27998319 100644
--- a/Source/platform/heap/ThreadState.h
+++ b/Source/platform/heap/ThreadState.h
@@ -189,7 +189,10 @@ template<typename U> class ThreadingTrait<const U> : public ThreadingTrait<U> {
 // To create a new typed heap add a H(<ClassName>) to the
 // FOR_EACH_TYPED_HEAP macro below.
 #define FOR_EACH_TYPED_HEAP(H)  \
-    H(Node)
+    H(Node) \
+    H(RenderObject) \
+    H(CSSValue)
+
 
 #define TypedHeapEnumName(Type) Type##Heap,
 #define TypedHeapEnumNameNonFinalized(Type) Type##HeapNonFinalized,