Remove ENABLE(OILPAN) uses in wtf/

third_party/WebKit/Source/wtf/HashTable.h

Index: third_party/WebKit/Source/wtf/HashTable.h
diff --git a/third_party/WebKit/Source/wtf/HashTable.h b/third_party/WebKit/Source/wtf/HashTable.h
index aad25e7c29840c7cec0016c97746ae89fe419eee..0226200cbabf903b66d2d78a27abc2d85becd42a 100644
--- a/third_party/WebKit/Source/wtf/HashTable.h
+++ b/third_party/WebKit/Source/wtf/HashTable.h
@@ -1005,13 +1005,11 @@ Value* HashTable<Key, Value, Extractor, HashFunctions, Traits, KeyTraits, Alloca
     // false for a pair of two types, even if one of the components is
     // polymorphic.
     static_assert(!Traits::emptyValueIsZero || !std::is_polymorphic<KeyType>::value, "empty value cannot be zero for things with a vtable");
-
-#if ENABLE(OILPAN)
     static_assert(Allocator::isGarbageCollected
         || ((!AllowsOnlyPlacementNew<KeyType>::value || !NeedsTracing<KeyType>::value)
         && (!AllowsOnlyPlacementNew<ValueType>::value || !NeedsTracing<ValueType>::value))
         , "Cannot put DISALLOW_NEW_EXCEPT_PLACEMENT_NEW objects that have trace methods into an off-heap HashTable");
-#endif
+
     if (Traits::emptyValueIsZero) {
         result = Allocator::template allocateZeroedHashTableBacking<ValueType, HashTable>(allocSize);
     } else {