Oilpan: turn DOMWindow into a heap supplementable.

Source/modules/crypto/DOMWindowCrypto.cpp

Index: Source/modules/crypto/DOMWindowCrypto.cpp
diff --git a/Source/modules/crypto/DOMWindowCrypto.cpp b/Source/modules/crypto/DOMWindowCrypto.cpp
index 3e3e0274303de313ac086fbe62ff95752ca6f490..5ba3c97db42e54d5613c00157d544c4a938f5e45 100644
--- a/Source/modules/crypto/DOMWindowCrypto.cpp
+++ b/Source/modules/crypto/DOMWindowCrypto.cpp
@@ -52,10 +52,10 @@ const char* DOMWindowCrypto::supplementName()
 
 DOMWindowCrypto& DOMWindowCrypto::from(DOMWindow& window)
 {
-    DOMWindowCrypto* supplement = static_cast<DOMWindowCrypto*>(Supplement<DOMWindow>::from(window, supplementName()));
+    DOMWindowCrypto* supplement = static_cast<DOMWindowCrypto*>(WillBeHeapSupplement<DOMWindow>::from(window, supplementName()));
     if (!supplement) {
         supplement = new DOMWindowCrypto(window);
-        provideTo(window, supplementName(), adoptPtr(supplement));
+        provideTo(window, supplementName(), adoptPtrWillBeNoop(supplement));
     }
     return *supplement;
 }
@@ -72,4 +72,9 @@ Crypto* DOMWindowCrypto::crypto() const
     return m_crypto.get();
 }
 
+void DOMWindowCrypto::trace(Visitor* visitor)
+{
+    visitor->trace(m_crypto);
+}
+
 } // namespace WebCore