Introduce ThreadableLoadingContext: make threaded loading code one step away from Document

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

 /*
  * Copyright (C) 2009 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 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/loader/ThreadableLoader.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/loader/DocumentThreadableLoader.h"
+#include "core/loader/ThreadableLoadingContext.h"
 #include "core/loader/WorkerThreadableLoader.h"
 #include "core/workers/WorkerGlobalScope.h"
 
 namespace blink {
 
 ThreadableLoader* ThreadableLoader::create(
     ExecutionContext& context,
     ThreadableLoaderClient* client,
     const ThreadableLoaderOptions& options,
     const ResourceLoaderOptions& resourceLoaderOptions) {
   DCHECK(client);
 
   if (context.isWorkerGlobalScope()) {
     return WorkerThreadableLoader::create(toWorkerGlobalScope(context), client,
                                           options, resourceLoaderOptions);
   }
 
-  return DocumentThreadableLoader::create(toDocument(context), client, options,
-                                          resourceLoaderOptions);
+  return DocumentThreadableLoader::create(
+      *ThreadableLoadingContext::create(*toDocument(&context)), client, options,
+      resourceLoaderOptions);
 }
 
 void ThreadableLoader::loadResourceSynchronously(
     ExecutionContext& context,
     const ResourceRequest& request,
     ThreadableLoaderClient& client,
     const ThreadableLoaderOptions& options,
     const ResourceLoaderOptions& resourceLoaderOptions) {
   if (context.isWorkerGlobalScope()) {
     WorkerThreadableLoader::loadResourceSynchronously(
         toWorkerGlobalScope(context), request, client, options,
         resourceLoaderOptions);
     return;
   }
 
   DocumentThreadableLoader::loadResourceSynchronously(
       toDocument(context), request, client, options, resourceLoaderOptions);
 }
 
 }  // namespace blink