Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/frame/BarProp.h

Index: third_party/WebKit/Source/core/frame/BarProp.h
diff --git a/third_party/WebKit/Source/core/frame/BarProp.h b/third_party/WebKit/Source/core/frame/BarProp.h
index 221fa100f62a5021346bc54e9e0888edfc301f8e..0095c9147f98553c70a33135d127ef0672a11c7e 100644
--- a/third_party/WebKit/Source/core/frame/BarProp.h
+++ b/third_party/WebKit/Source/core/frame/BarProp.h
@@ -39,15 +39,15 @@ namespace blink {
 
 class LocalFrame;
 
-class BarProp final : public RefCountedWillBeGarbageCollected<BarProp>, public ScriptWrappable, public DOMWindowProperty {
+class BarProp final : public GarbageCollected<BarProp>, public ScriptWrappable, public DOMWindowProperty {
     DEFINE_WRAPPERTYPEINFO();
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(BarProp);
+    USING_GARBAGE_COLLECTED_MIXIN(BarProp);
 public:
     enum Type { Locationbar, Menubar, Personalbar, Scrollbars, Statusbar, Toolbar };
 
-    static PassRefPtrWillBeRawPtr<BarProp> create(LocalFrame* frame, Type type)
+    static RawPtr<BarProp> create(LocalFrame* frame, Type type)
     {
-        return adoptRefWillBeNoop(new BarProp(frame, type));
+        return (new BarProp(frame, type));
     }
 
     bool visible() const;