Update post state on navigation within page.

content/browser/frame_host/navigation_controller_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/frame_host/navigation_controller_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
@@ skipping 1150 matching lines @@
       rfh->GetSiteInstance(), params.page_id);
 
   // Reference fragment navigation. We're guaranteed to have the last_committed
   // entry and it will be the same page as the new navigation (minus the
   // reference fragments, of course).  We'll update the URL of the existing
   // entry without pruning the forward history.
   existing_entry->SetURL(params.url);
   if (existing_entry->update_virtual_url_with_url())
     UpdateVirtualURLToURL(existing_entry, params.url);
 
+  existing_entry->SetHasPostData(params.is_post);
+  existing_entry->SetPostID(params.post_id);
+
   // This replaces the existing entry since the page ID didn't change.
   *did_replace_entry = true;
 
   DiscardNonCommittedEntriesInternal();
 
   // If a transient entry was removed, the indices might have changed, so we
   // have to query the entry index again.
   last_committed_entry_index_ =
       GetEntryIndexWithPageID(rfh->GetSiteInstance(), params.page_id);
 }
@@ skipping 580 matching lines @@
     }
   }
 }
 
 void NavigationControllerImpl::SetGetTimestampCallbackForTest(
     const base::Callback<base::Time()>& get_timestamp_callback) {
   get_timestamp_callback_ = get_timestamp_callback;
 }
 
 }  // namespace content