Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/modules/serviceworkers/ExtendableMessageEvent.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ExtendableMessageEvent_h
 #define ExtendableMessageEvent_h
 
 #include "modules/EventModules.h"
 #include "modules/ModulesExport.h"
 #include "modules/serviceworkers/ExtendableEvent.h"
 #include "modules/serviceworkers/ExtendableMessageEventInit.h"
 
 namespace blink {
 
 class MODULES_EXPORT ExtendableMessageEvent final : public ExtendableEvent {
     DEFINE_WRAPPERTYPEINFO();
 
 public:
-    static PassRefPtrWillBeRawPtr<ExtendableMessageEvent> create();
-    static PassRefPtrWillBeRawPtr<ExtendableMessageEvent> create(const AtomicString& type, const ExtendableMessageEventInit& initializer);
-    static PassRefPtrWillBeRawPtr<ExtendableMessageEvent> create(const AtomicString& type, const ExtendableMessageEventInit& initializer, WaitUntilObserver*);
+    static RawPtr<ExtendableMessageEvent> create();
+    static RawPtr<ExtendableMessageEvent> create(const AtomicString& type, const ExtendableMessageEventInit& initializer);
+    static RawPtr<ExtendableMessageEvent> create(const AtomicString& type, const ExtendableMessageEventInit& initializer, WaitUntilObserver*);
 
     const AtomicString& interfaceName() const override;
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     ExtendableMessageEvent();
     ExtendableMessageEvent(const AtomicString& type, const ExtendableMessageEventInit& initializer);
     ExtendableMessageEvent(const AtomicString& type, const ExtendableMessageEventInit& initializer, WaitUntilObserver*);
 };
 
 } // namespace blink
 
 #endif // ExtendableMessageEvent_h