Oilpan: convert remaining editing/ RefPtr<Node>s to transition types.

Source/core/editing/WrapContentsInDummySpanCommand.cpp

Index: Source/core/editing/WrapContentsInDummySpanCommand.cpp
diff --git a/Source/core/editing/WrapContentsInDummySpanCommand.cpp b/Source/core/editing/WrapContentsInDummySpanCommand.cpp
index b63e16ec5020769b825e029f481de017022f69ee..f615a556743d1c1d7aff534406259516159d52e3 100644
--- a/Source/core/editing/WrapContentsInDummySpanCommand.cpp
+++ b/Source/core/editing/WrapContentsInDummySpanCommand.cpp
@@ -41,7 +41,7 @@ WrapContentsInDummySpanCommand::WrapContentsInDummySpanCommand(PassRefPtrWillBeR
 
 void WrapContentsInDummySpanCommand::executeApply()
 {
-    Vector<RefPtr<Node> > children;
+    WillBeHeapVector<RefPtrWillBeMember<Node> > children;
     for (Node* child = m_element->firstChild(); child; child = child->nextSibling())
         children.append(child);
 
@@ -66,7 +66,7 @@ void WrapContentsInDummySpanCommand::doUnapply()
     if (!m_dummySpan || !m_element->rendererIsEditable())
         return;
 
-    Vector<RefPtr<Node> > children;
+    WillBeHeapVector<RefPtrWillBeMember<Node> > children;
     for (Node* child = m_dummySpan->firstChild(); child; child = child->nextSibling())
         children.append(child);