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

third_party/WebKit/Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
@@ skipping 1601 matching lines @@
 
   bool isFormSubmission = type == NavigationTypeFormSubmitted ||
                           type == NavigationTypeFormResubmitted;
   if (isFormSubmission &&
       !m_frame->document()->contentSecurityPolicy()->allowFormAction(
           request.url()))
     return false;
 
   policy = client()->decidePolicyForNavigation(request, loader, type, policy,
                                                replacesCurrentHistoryItem,
-                                               isClientRedirect);
+                                               isClientRedirect, form);
   if (policy == NavigationPolicyCurrentTab)
     return true;
   if (policy == NavigationPolicyIgnore)
     return false;
   if (policy == NavigationPolicyHandledByClient) {
     m_isNavigationHandledByClient = true;
     // Mark the frame as loading since the embedder is handling the navigation.
     m_progressTracker->progressStarted();
 
     // If this is a form submit, dispatch that a form is being submitted
@@ skipping 319 matching lines @@
                          m_documentLoader ? m_documentLoader->url() : String());
   return tracedValue;
 }
 
 inline void FrameLoader::takeObjectSnapshot() const {
   TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID("loading", "FrameLoader", this,
                                       toTracedValue());
 }
 
 }  // namespace blink