PlzNavigate: Fix the http/tests/loading/307-after-303-after-post.html and the http/tests/loading/re…

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 39 matching lines @@
                                    const SubstituteData&,
                                    ClientRedirectPolicy);
 
   static WebDataSourceImpl* fromDocumentLoader(DocumentLoader* loader) {
     return static_cast<WebDataSourceImpl*>(loader);
   }
 
   // WebDataSource methods:
   const WebURLRequest& originalRequest() const override;
   const WebURLRequest& getRequest() const override;
+  WebURLRequest& getRequestWritable() override;
   const WebURLResponse& response() const override;
   bool hasUnreachableURL() const override;
   WebURL unreachableURL() const override;
   void appendRedirect(const WebURL&) override;
   void redirectChain(WebVector<WebURL>&) const override;
   bool isClientRedirect() const override;
   bool replacesCurrentHistoryItem() const override;
   WebNavigationType navigationType() const override;
   ExtraData* getExtraData() const override;
   void setExtraData(ExtraData*) override;
@@ skipping 22 matching lines @@
   mutable WrappedResourceRequest m_originalRequestWrapper;
   mutable WrappedResourceRequest m_requestWrapper;
   mutable WrappedResourceResponse m_responseWrapper;
 
   std::unique_ptr<ExtraData> m_extraData;
 };
 
 }  // namespace blink
 
 #endif  // WebDataSourceImpl_h