[DO NOT COMMIT] Test implementation of converting same URL navigation into a reload

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.
 
 /*
  * Copyright (C) 2006, 2007, 2008, 2009 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/)
  *
@@ skipping 1810 matching lines @@
   // tab.
   if (IsRendererDebugURL(pending_entry_->GetURL())) {
     // TODO(creis): Find the RVH for the correct frame.
     if (!delegate_->GetRenderViewHost()->IsRenderViewLive() &&
         !IsInitialNavigation()) {
       DiscardNonCommittedEntries();
       return;
     }
   }
 
+  if (GetLastCommittedEntry() && reload_type == NO_RELOAD) {
+    if (pending_entry_->GetURL() == GetLastCommittedEntry()->GetURL()) {
+      DiscardNonCommittedEntries();
+      ReloadInternal(false, RELOAD);
+      return;
+    }
+  }
+
   // This call does not support re-entrancy.  See http://crbug.com/347742.
   CHECK(!in_navigate_to_pending_entry_);
   in_navigate_to_pending_entry_ = true;
   bool success = NavigateToPendingEntryInternal(reload_type);
   in_navigate_to_pending_entry_ = false;
 
   if (!success)
     DiscardNonCommittedEntries();
 }
 
@@ skipping 276 matching lines @@
     }
   }
 }
 
 void NavigationControllerImpl::SetGetTimestampCallbackForTest(
     const base::Callback<base::Time()>& get_timestamp_callback) {
   get_timestamp_callback_ = get_timestamp_callback;
 }
 
 }  // namespace content