Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/modules/encryptedmedia/MediaKeyMessageEvent.h

Index: third_party/WebKit/Source/modules/encryptedmedia/MediaKeyMessageEvent.h
diff --git a/third_party/WebKit/Source/modules/encryptedmedia/MediaKeyMessageEvent.h b/third_party/WebKit/Source/modules/encryptedmedia/MediaKeyMessageEvent.h
index 044a42a0a311f1b97c867d3782a0eef59ff397e3..cd23b4fbad3ec35484f0c4e4e07de3b0ffcd5888 100644
--- a/third_party/WebKit/Source/modules/encryptedmedia/MediaKeyMessageEvent.h
+++ b/third_party/WebKit/Source/modules/encryptedmedia/MediaKeyMessageEvent.h
@@ -40,14 +40,14 @@ class MediaKeyMessageEvent final : public Event {
 public:
     ~MediaKeyMessageEvent() override;
 
-    static PassRefPtrWillBeRawPtr<MediaKeyMessageEvent> create()
+    static RawPtr<MediaKeyMessageEvent> create()
     {
-        return adoptRefWillBeNoop(new MediaKeyMessageEvent);
+        return (new MediaKeyMessageEvent);
     }
 
-    static PassRefPtrWillBeRawPtr<MediaKeyMessageEvent> create(const AtomicString& type, const MediaKeyMessageEventInit& initializer)
+    static RawPtr<MediaKeyMessageEvent> create(const AtomicString& type, const MediaKeyMessageEventInit& initializer)
     {
-        return adoptRefWillBeNoop(new MediaKeyMessageEvent(type, initializer));
+        return (new MediaKeyMessageEvent(type, initializer));
     }
 
     const AtomicString& interfaceName() const override;