Oilpan: Remove most WillBe types from the code base

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

Index: third_party/WebKit/Source/core/html/HTMLProgressElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLProgressElement.h b/third_party/WebKit/Source/core/html/HTMLProgressElement.h
index d397b5a88575a4a38a1cdbda4f1d34cc06042acc..6f60a1a24ff8f7107d13c0f6d645d171ecefa488 100644
--- a/third_party/WebKit/Source/core/html/HTMLProgressElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLProgressElement.h
@@ -35,7 +35,7 @@ public:
     static const double IndeterminatePosition;
     static const double InvalidPosition;
 
-    static PassRefPtrWillBeRawPtr<HTMLProgressElement> create(Document&);
+    static RawPtr<HTMLProgressElement> create(Document&);
 
     double value() const;
     void setValue(double);
@@ -69,7 +69,7 @@ private:
     void didAddUserAgentShadowRoot(ShadowRoot&) override;
     bool isDeterminate() const;
 
-    RawPtrWillBeMember<ProgressValueElement> m_value;
+    Member<ProgressValueElement> m_value;
 };
 
 } // namespace blink