Nuke WebPassOwnPtr<T> and replace it with std::unique_ptr<T>.

third_party/WebKit/public/platform/modules/serviceworker/WebServiceWorkerRegistrationProxy.h

 // Copyright 2014 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.
 
 #ifndef WebServiceWorkerRegistrationProxy_h
 #define WebServiceWorkerRegistrationProxy_h
 
-#include "public/platform/WebPassOwnPtr.h"
+#include <memory>
 
 namespace blink {
 
 class WebServiceWorker;
 
 // A proxy interface, passed via WebServiceWorkerRegistration.setProxy() from
 // blink to the embedder, to talk to the ServiceWorkerRegistration object from
 // embedder.
 class WebServiceWorkerRegistrationProxy {
 public:
     // Notifies that the registration entered the installation process.
     // The installing worker should be accessible via
     // WebServiceWorkerRegistration.installing.
     virtual void dispatchUpdateFoundEvent() = 0;
 
-    virtual void setInstalling(WebPassOwnPtr<WebServiceWorker::Handle>) = 0;
-    virtual void setWaiting(WebPassOwnPtr<WebServiceWorker::Handle>) = 0;
-    virtual void setActive(WebPassOwnPtr<WebServiceWorker::Handle>) = 0;
+    virtual void setInstalling(std::unique_ptr<WebServiceWorker::Handle>) = 0;
+    virtual void setWaiting(std::unique_ptr<WebServiceWorker::Handle>) = 0;
+    virtual void setActive(std::unique_ptr<WebServiceWorker::Handle>) = 0;
 
 protected:
     virtual ~WebServiceWorkerRegistrationProxy() { }
 };
 
 } // namespace blink
 
 #endif // WebServiceWorkerRegistrationProxy_h