Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/web/WebDataSourceImpl.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 27 matching lines @@
 #include "platform/weborigin/KURL.h"
 #include "public/web/WebDataSource.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class WebDataSourceImpl final : public DocumentLoader, public WebDataSource {
 public:
-    static PassRefPtrWillBeRawPtr<WebDataSourceImpl> create(LocalFrame*, const ResourceRequest&, const SubstituteData&);
+    static RawPtr<WebDataSourceImpl> create(LocalFrame*, const ResourceRequest&, const SubstituteData&);
 
     static WebDataSourceImpl* fromDocumentLoader(DocumentLoader* loader)
     {
         return static_cast<WebDataSourceImpl*>(loader);
     }
 
     // WebDataSource methods:
     const WebURLRequest& originalRequest() const override;
     const WebURLRequest& request() const override;
     const WebURLResponse& response() const override;
@@ skipping 23 matching lines @@
     mutable WrappedResourceRequest m_originalRequestWrapper;
     mutable WrappedResourceRequest m_requestWrapper;
     mutable WrappedResourceResponse m_responseWrapper;
 
     OwnPtr<ExtraData> m_extraData;
 };
 
 } // namespace blink
 
 #endif  // WebDataSourceImpl_h