Make WebTaskRunner ThreadSafeRefCounted

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

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 976 matching lines @@
   if (!frame()->settings())
     return priority;
 
   // If enabled, drop the priority of all resources in a subframe.
   if (frame()->settings()->getLowPriorityIframes() && !frame()->isMainFrame())
     return ResourceLoadPriorityVeryLow;
 
   return priority;
 }
 
-WebTaskRunner* FrameFetchContext::loadingTaskRunner() const {
+RefPtr<WebTaskRunner> FrameFetchContext::loadingTaskRunner() const {
   return frame()->frameScheduler()->loadingTaskRunner();
 }
 
 void FrameFetchContext::dispatchDidReceiveResponseInternal(
     unsigned long identifier,
     const ResourceResponse& response,
     WebURLRequest::FrameType frameType,
     WebURLRequest::RequestContext requestContext,
     Resource* resource,
     LinkLoader::CanLoadResources resourceLoadingPolicy) {
@@ skipping 33 matching lines @@
                                                     response);
 }
 
 DEFINE_TRACE(FrameFetchContext) {
   visitor->trace(m_document);
   visitor->trace(m_documentLoader);
   FetchContext::trace(visitor);
 }
 
 }  // namespace blink