PlzNavigate: inform the WebFrameClient that a form will be submitted

third_party/WebKit/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 328 matching lines @@
 
     // If the redirecting url is not allowed to display content from the target origin,
     // then block the redirect.
     const KURL& requestURL = m_request.url();
     RefPtr<SecurityOrigin> redirectingOrigin = SecurityOrigin::create(redirectResponse.url());
     if (!redirectingOrigin->canDisplay(requestURL)) {
         FrameLoader::reportLocalLoadFailed(m_frame, requestURL.string());
         cancelMainResourceLoad(ResourceError::cancelledError(requestURL));
         return;
     }
-    if (!frameLoader()->shouldContinueForNavigationPolicy(m_request, SubstituteData(), this, CheckContentSecurityPolicy, m_navigationType, NavigationPolicyCurrentTab, replacesCurrentHistoryItem(), isClientRedirect())) {
+    if (!frameLoader()->shouldContinueForNavigationPolicy(m_request, SubstituteData(), this, CheckContentSecurityPolicy, m_navigationType, NavigationPolicyCurrentTab, replacesCurrentHistoryItem(), isClientRedirect(), nullptr)) {
         cancelMainResourceLoad(ResourceError::cancelledError(requestURL));
         return;
     }
 
     ASSERT(timing().fetchStart());
     timing().addRedirect(redirectResponse.url(), requestURL);
     appendRedirect(requestURL);
     frameLoader()->receivedMainResourceRedirect(requestURL);
 }
 
@@ skipping 424 matching lines @@
 {
     m_writer = createWriterFor(init, mimeType(), m_writer ? m_writer->encoding() : emptyAtom, true, ForceSynchronousParsing);
     if (!source.isNull())
         m_writer->appendReplacingData(source);
     endWriting(m_writer.get());
 }
 
 DEFINE_WEAK_IDENTIFIER_MAP(DocumentLoader);
 
 } // namespace blink