Oilpan: Move SelectorFilter to oilpan's heap

Source/core/css/resolver/StyleResolver.cpp

Index: Source/core/css/resolver/StyleResolver.cpp
diff --git a/Source/core/css/resolver/StyleResolver.cpp b/Source/core/css/resolver/StyleResolver.cpp
index 9029fc339f82bf08fa1bc50b029c32320c9331ce..84cc5be6335a0f5434100cd7cc21a754183cbaa8 100644
--- a/Source/core/css/resolver/StyleResolver.cpp
+++ b/Source/core/css/resolver/StyleResolver.cpp
@@ -1566,6 +1566,7 @@ void StyleResolver::trace(Visitor* visitor)
     visitor->trace(m_keyframesRuleMap);
     visitor->trace(m_matchedPropertiesCache);
     visitor->trace(m_viewportDependentMediaQueryResults);
+    visitor->trace(m_selectorFilter);
     visitor->trace(m_viewportStyleResolver);
     visitor->trace(m_features);
     visitor->trace(m_siblingRuleSet);