Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/dom/CrossThreadTask.h

 /*
  * Copyright (C) 2009-2010 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 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef CrossThreadTask_h
 #define CrossThreadTask_h
 
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/ExecutionContextTask.h"
 #include "platform/ThreadSafeFunctional.h"
+#include "wtf/PassOwnPtr.h"
 #include <type_traits>
 
 namespace blink {
 
 // createCrossThreadTask(...) is ExecutionContextTask version of
 // threadSafeBind().
 // Using WTF::bind() directly is not thread-safe due to temporary objects, see
 // https://crbug.com/390851 for details.
 //
 // Example:
@@ skipping 47 matching lines @@
 template<typename FunctionType, typename... P,
     typename RETTYPE = std::unique_ptr<ExecutionContextTask>, size_t PS = sizeof...(P), size_t MPS = WTF::FunctionWrapper<FunctionType>::numberOfArguments>
 typename std::enable_if<PS == MPS, RETTYPE>::type createCrossThreadTask(FunctionType function, P&&... parameters)
 {
     return internal::createCallClosureTask(threadSafeBind(function, std::forward<P>(parameters)...));
 }
 
 } // namespace blink
 
 #endif // CrossThreadTask_h