Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/html/HTMLOutputElement.h

Index: third_party/WebKit/Source/core/html/HTMLOutputElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLOutputElement.h b/third_party/WebKit/Source/core/html/HTMLOutputElement.h
index 924cfabaad56b88a78bc3dd5008b65ebb6b713d9..3965fa58e685847b0e25ce913d4a600c06e2b41f 100644
--- a/third_party/WebKit/Source/core/html/HTMLOutputElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLOutputElement.h
@@ -38,9 +38,9 @@ namespace blink {
 
 class CORE_EXPORT HTMLOutputElement final : public HTMLFormControlElement, private DOMSettableTokenListObserver {
     DEFINE_WRAPPERTYPEINFO();
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLOutputElement);
+    USING_GARBAGE_COLLECTED_MIXIN(HTMLOutputElement);
 public:
-    static PassRefPtrWillBeRawPtr<HTMLOutputElement> create(Document&, HTMLFormElement*);
+    static RawPtr<HTMLOutputElement> create(Document&, HTMLFormElement*);
     ~HTMLOutputElement() override;
 
     bool willValidate() const override { return false; }
@@ -71,7 +71,7 @@ private:
 
     bool m_isDefaultValueMode;
     String m_defaultValue;
-    RefPtrWillBeMember<DOMSettableTokenList> m_tokens;
+    Member<DOMSettableTokenList> m_tokens;
 };
 
 } // namespace blink