Reset DocumentLoader::m_request's method to GET for pushState and replaceState

Source/core/loader/DocumentLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2011 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 113 matching lines @@
 const ResourceRequest& DocumentLoader::request() const
 {
     return m_request;
 }
 
 const KURL& DocumentLoader::url() const
 {
     return m_request.url();
 }
 
-void DocumentLoader::updateForSameDocumentNavigation(const KURL& newURL)
+void DocumentLoader::updateForSameDocumentNavigation(const KURL& newURL, SameDocumentNavigationSource sameDocumentNavigationSource)
 {
     KURL oldURL = m_request.url();
     m_originalRequest.setURL(newURL);
     m_request.setURL(newURL);
+    if (sameDocumentNavigationSource == SameDocumentNavigationHistoryApi) {
+        m_request.setHTTPMethod("GET");
+        m_request.setHTTPBody(nullptr);
+    }
     clearRedirectChain();
     if (m_isClientRedirect)
         appendRedirect(oldURL);
     appendRedirect(newURL);
 }
 
 const KURL& DocumentLoader::urlForHistory() const
 {
     return unreachableURL().isEmpty() ? url() : unreachableURL();
 }
@@ skipping 668 matching lines @@
 void DocumentLoader::replaceDocument(const String& source, Document* ownerDocument)
 {
     m_frame->loader().stopAllLoaders();
     m_writer = createWriterFor(m_frame, ownerDocument, m_frame->document()->url(), mimeType(), m_writer ? m_writer->encoding() : emptyAtom,  m_writer ? m_writer->encodingWasChosenByUser() : false, true);
     if (!source.isNull())
         m_writer->appendReplacingData(source);
     endWriting(m_writer.get());
 }
 
 } // namespace WebCore