Make ThreadableLoader class to use references

Source/core/loader/WorkerThreadableLoader.h

Index: Source/core/loader/WorkerThreadableLoader.h
diff --git a/Source/core/loader/WorkerThreadableLoader.h b/Source/core/loader/WorkerThreadableLoader.h
index f1a747232f07cb5740cbc66d3bd1569fcd2e2a57..d367af2ad49acadffeeeb783df66da8b94b876a6 100644
--- a/Source/core/loader/WorkerThreadableLoader.h
+++ b/Source/core/loader/WorkerThreadableLoader.h
@@ -54,8 +54,8 @@ namespace WebCore {
     class WorkerThreadableLoader FINAL : public RefCounted<WorkerThreadableLoader>, public ThreadableLoader {
         WTF_MAKE_FAST_ALLOCATED;
     public:
-        static void loadResourceSynchronously(WorkerGlobalScope*, const ResourceRequest&, ThreadableLoaderClient&, const ThreadableLoaderOptions&);
-        static PassRefPtr<WorkerThreadableLoader> create(WorkerGlobalScope* workerGlobalScope, PassRefPtr<ThreadableLoaderClientWrapper> clientWrapper, PassOwnPtr<ThreadableLoaderClient> clientBridge, const ResourceRequest& request, const ThreadableLoaderOptions& options)
+        static void loadResourceSynchronously(WorkerGlobalScope&, const ResourceRequest&, ThreadableLoaderClient&, const ThreadableLoaderOptions&);
+        static PassRefPtr<WorkerThreadableLoader> create(WorkerGlobalScope& workerGlobalScope, PassRefPtr<ThreadableLoaderClientWrapper> clientWrapper, PassOwnPtr<ThreadableLoaderClient> clientBridge, const ResourceRequest& request, const ThreadableLoaderOptions& options)
         {
             return adoptRef(new WorkerThreadableLoader(workerGlobalScope, clientWrapper, clientBridge, request, options));
         }
@@ -132,7 +132,7 @@ namespace WebCore {
             WorkerLoaderProxy& m_loaderProxy;
         };
 
-        WorkerThreadableLoader(WorkerGlobalScope*, PassRefPtr<ThreadableLoaderClientWrapper>, PassOwnPtr<ThreadableLoaderClient>, const ResourceRequest&, const ThreadableLoaderOptions&);
+        WorkerThreadableLoader(WorkerGlobalScope&, PassRefPtr<ThreadableLoaderClientWrapper>, PassOwnPtr<ThreadableLoaderClient>, const ResourceRequest&, const ThreadableLoaderOptions&);
 
         RefPtrWillBePersistent<WorkerGlobalScope> m_workerGlobalScope;
         RefPtr<ThreadableLoaderClientWrapper> m_workerClientWrapper;