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

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerWindowClientCallback.h

 // 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.
 
 #ifndef ServiceWorkerWindowClientCallback_h
 #define ServiceWorkerWindowClientCallback_h
 
 #include "public/platform/modules/serviceworker/WebServiceWorkerClientsInfo.h"
 
 namespace blink {
 
 class ScriptPromiseResolver;
 
 class NavigateClientCallback : public WebServiceWorkerClientCallbacks {
 public:
     explicit NavigateClientCallback(ScriptPromiseResolver* resolver)
         : m_resolver(resolver) { }
 
-    void onSuccess(WebPassOwnPtr<WebServiceWorkerClientInfo>) override;
+    void onSuccess(std::unique_ptr<WebServiceWorkerClientInfo>) override;
     void onError(const WebServiceWorkerError&) override;
 
 private:
     Persistent<ScriptPromiseResolver> m_resolver;
     WTF_MAKE_NONCOPYABLE(NavigateClientCallback);
 };
 
 } // namespace blink
 
 #endif // ServiceWorkerWindowClientCallback_h