Refactor the API for setting dynamic resource load priorities

Source/core/fetch/ResourceLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2007 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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 188 matching lines @@
         return;
 
     if (m_notifiedLoadComplete)
         return;
     m_notifiedLoadComplete = true;
     m_fetcher->didFinishLoading(m_resource, finishTime, encodedDataLength);
 }
 
 void ResourceLoader::didChangePriority(ResourceLoadPriority loadPriority, int intraPriorityValue)
 {
-    if (m_loader) {
-        m_fetcher->didChangeLoadingPriority(m_resource, loadPriority, intraPriorityValue);
-        ASSERT(m_state != Terminated);
+    ASSERT(m_state != Terminated);
+    if (m_loader)
         m_loader->didChangePriority(static_cast<WebURLRequest::Priority>(loadPriority), intraPriorityValue);
-    }
-}
-
-bool ResourceLoader::shouldUseIncreasedPriorities()
-{
-    return m_fetcher->context().fetchIncreasePriorities();
 }
 
 void ResourceLoader::cancelIfNotFinishing()
 {
     if (m_state != Initialized)
         return;
     cancel();
 }
 
 void ResourceLoader::cancel()
@@ skipping 289 matching lines @@
     didFinishLoading(0, monotonicallyIncreasingTime(), encodedDataLength);
 }
 
 ResourceRequest& ResourceLoader::applyOptions(ResourceRequest& request) const
 {
     request.setAllowStoredCredentials(m_options.allowCredentials == AllowStoredCredentials);
     return request;
 }
 
 }