Oilpan: add [WillBeGarbageCollected] for Element.

Source/core/html/HTMLFormElement.cpp

Index: Source/core/html/HTMLFormElement.cpp
diff --git a/Source/core/html/HTMLFormElement.cpp b/Source/core/html/HTMLFormElement.cpp
index 2ae2ecbeb61fd30cd773ee496ee9319e355fe054..69224c2615eb19aa33c63796c6425d8f012b986c 100644
--- a/Source/core/html/HTMLFormElement.cpp
+++ b/Source/core/html/HTMLFormElement.cpp
@@ -750,7 +750,7 @@ void HTMLFormElement::copyNonAttributePropertiesFromElement(const Element& sourc
     HTMLElement::copyNonAttributePropertiesFromElement(source);
 }
 
-void HTMLFormElement::anonymousNamedGetter(const AtomicString& name, bool& returnValue0Enabled, RefPtrWillBeRawPtr<RadioNodeList>& returnValue0, bool& returnValue1Enabled, RefPtr<Element>& returnValue1)
+void HTMLFormElement::anonymousNamedGetter(const AtomicString& name, bool& returnValue0Enabled, RefPtrWillBeRawPtr<RadioNodeList>& returnValue0, bool& returnValue1Enabled, RefPtrWillBeRawPtr<Element>& returnValue1)
 {
     // Call getNamedElements twice, first time check if it has a value
     // and let HTMLFormElement update its cache.
@@ -770,8 +770,7 @@ void HTMLFormElement::anonymousNamedGetter(const AtomicString& name, bool& retur
 
     if (elements.size() == 1) {
         returnValue1Enabled = true;
-        // FIXME: Oilpan: remove the call to |get| when Element becomes [GarbageCollected].
-        returnValue1 = elements.at(0).get();
+        returnValue1 = elements.at(0);
         return;
     }