Return unique_ptr<WebDataConsumerHandle::Reader> directly from obtainReader

third_party/WebKit/Source/modules/fetch/CompositeDataConsumerHandle.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 "modules/fetch/CompositeDataConsumerHandle.h"
 
 #include "platform/CrossThreadFunctional.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebTaskRunner.h"
 #include "public/platform/WebThread.h"
@@ skipping 191 matching lines @@
 }
 
 CompositeDataConsumerHandle::CompositeDataConsumerHandle(std::unique_ptr<WebDataConsumerHandle> handle, Updater** updater)
     : m_context(Context::create(std::move(handle)))
 {
     *updater = new Updater(m_context);
 }
 
 CompositeDataConsumerHandle::~CompositeDataConsumerHandle() { }
 
-WebDataConsumerHandle::Reader* CompositeDataConsumerHandle::obtainReaderInternal(Client* client)
+std::unique_ptr<WebDataConsumerHandle::Reader> CompositeDataConsumerHandle::obtainReader(Client* client)
 {
-    return m_context->obtainReader(client).release();
+    return m_context->obtainReader(client);
 }
 
 } // namespace blink