[oilpan] Fix iterators over member collections to return Result<T>

Source/core/inspector/InspectorDOMAgent.cpp

Index: Source/core/inspector/InspectorDOMAgent.cpp
diff --git a/Source/core/inspector/InspectorDOMAgent.cpp b/Source/core/inspector/InspectorDOMAgent.cpp
index 8f07707ece78b997811c5b5d0bbe8572367d63eb..2e57af2c98e32dcc47dce22a987f70fdd67fc56e 100644
--- a/Source/core/inspector/InspectorDOMAgent.cpp
+++ b/Source/core/inspector/InspectorDOMAgent.cpp
@@ -217,7 +217,7 @@ void RevalidateStyleAttributeTask::onTimer(Timer<RevalidateStyleAttributeTask>*)
     // The timer is stopped on m_domAgent destruction, so this method will never be called after m_domAgent has been destroyed.
     CollectionRoot<Vector<Member<Element> > > elements;
     for (HashSet<Member<Element> >::iterator it = m_elements->begin(), end = m_elements->end(); it != end; ++it)
-        elements->append(it->handle().raw());
+        elements->append((*it).handle().raw());
     m_domAgent->styleAttributeInvalidated(*elements);
 
     m_elements->clear();