[oilpan] Rename visit to mark.

Source/modules/encryptedmedia/MediaKeySession.h

Index: Source/modules/encryptedmedia/MediaKeySession.h
diff --git a/Source/modules/encryptedmedia/MediaKeySession.h b/Source/modules/encryptedmedia/MediaKeySession.h
index bc5737896d115cd147aef0200e5ce7928aedbc76..86b31ffb569b2724c94305693a28667723440b98 100644
--- a/Source/modules/encryptedmedia/MediaKeySession.h
+++ b/Source/modules/encryptedmedia/MediaKeySession.h
@@ -55,9 +55,9 @@ public:
         visitor->trace(m_scriptExecutionContext);
     }
 
-    virtual void visitWith(Visitor* visitor) const OVERRIDE
+    virtual void adjustAndMark(Visitor* visitor) const OVERRIDE
     {
-        visitor->visit(this);
+        visitor->mark(this);
     }
 
     const String& keySystem() const { return m_keySystem; }