Remove tons of OILPAN.

sky/engine/core/css/MediaQuery.cpp

Index: sky/engine/core/css/MediaQuery.cpp
diff --git a/sky/engine/core/css/MediaQuery.cpp b/sky/engine/core/css/MediaQuery.cpp
index b786d44421ac7dcd0bac80733c58d5ffe4e524ef..1999b34088f91f3fe0af53b1e7837ce9643e2072 100644
--- a/sky/engine/core/css/MediaQuery.cpp
+++ b/sky/engine/core/css/MediaQuery.cpp
@@ -133,13 +133,4 @@ String MediaQuery::cssText() const
     return m_serializationCache;
 }
 
-void MediaQuery::trace(Visitor* visitor)
-{
-    // We don't support tracing of vectors of OwnPtrs (ie. OwnPtr<Vector<OwnPtr<MediaQuery> > >).
-    // Since this is a transitional object we are just ifdef'ing it out when oilpan is not enabled.
-#if ENABLE(OILPAN)
-    visitor->trace(m_expressions);
-#endif
-}
-
 }