Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/platform/exported/WebDataConsumerHandle.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "public/platform/WebDataConsumerHandle.h"
 
 #include "platform/heap/Handle.h"
-#include "wtf/PtrUtil.h"
+
 #include <algorithm>
-#include <memory>
 #include <string.h>
 
 namespace blink {
 
 WebDataConsumerHandle::WebDataConsumerHandle()
 {
     ASSERT(ThreadState::current());
 }
 
 WebDataConsumerHandle::~WebDataConsumerHandle()
 {
     ASSERT(ThreadState::current());
 }
 
-std::unique_ptr<WebDataConsumerHandle::Reader> WebDataConsumerHandle::obtainReader(WebDataConsumerHandle::Client* client)
+PassOwnPtr<WebDataConsumerHandle::Reader> WebDataConsumerHandle::obtainReader(WebDataConsumerHandle::Client* client)
 {
     ASSERT(ThreadState::current());
-    return wrapUnique(obtainReaderInternal(client));
+    return adoptPtr(obtainReaderInternal(client));
 }
 
 WebDataConsumerHandle::Result WebDataConsumerHandle::Reader::read(void* data, size_t size, Flags flags, size_t* readSize)
 {
     *readSize = 0;
     const void* src = nullptr;
     size_t available;
     Result r = beginRead(&src, flags, &available);
     if (r != WebDataConsumerHandle::Ok)
         return r;
     *readSize = std::min(available, size);
     memcpy(data, src, *readSize);
     return endRead(*readSize);
 }
 
 } // namespace blink