PlzNavigate: send searchable form data to the browser side on form submission.

third_party/WebKit/Source/core/loader/FrameLoaderClient.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2012 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
@@ skipping 101 matching lines @@
   virtual void dispatchDidFinishDocumentLoad() = 0;
   virtual void dispatchDidFinishLoad() = 0;
   virtual void dispatchDidChangeThemeColor() = 0;
 
   virtual NavigationPolicy decidePolicyForNavigation(
       const ResourceRequest&,
       DocumentLoader*,
       NavigationType,
       NavigationPolicy,
       bool shouldReplaceCurrentEntry,
-      bool isClientRedirect) = 0;
+      bool isClientRedirect,
+      HTMLFormElement*) = 0;
 
   virtual void dispatchWillSendSubmitEvent(HTMLFormElement*) = 0;
   virtual void dispatchWillSubmitForm(HTMLFormElement*) = 0;
 
   virtual void didStartLoading(LoadStartType) = 0;
   virtual void progressEstimateChanged(double progressEstimate) = 0;
   virtual void didStopLoading() = 0;
 
   virtual void loadURLExternally(const ResourceRequest&,
                                  NavigationPolicy,
@@ skipping 202 matching lines @@
   }
 
   // Overwrites the given URL to use an HTML5 embed if possible. An empty URL is
   // returned if the URL is not overriden.
   virtual KURL overrideFlashEmbedWithHTML(const KURL&) { return KURL(); }
 };
 
 }  // namespace blink
 
 #endif  // FrameLoaderClient_h