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

third_party/WebKit/Source/modules/installedapp/InstalledAppController.cpp

 // Copyright 2016 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/installedapp/InstalledAppController.h"
 
 #include "core/frame/LocalFrame.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "public/platform/WebSecurityOrigin.h"
 
+#include <utility>
+
 namespace blink {
 
 InstalledAppController::~InstalledAppController()
 {
 }
 
 void InstalledAppController::provideTo(LocalFrame& frame, WebInstalledAppClient* client)
 {
     ASSERT(RuntimeEnabledFeatures::installedAppEnabled());
 
@@ skipping 12 matching lines @@
     : LocalFrameLifecycleObserver(&frame)
     , m_client(client)
 {
 }
 
 const char* InstalledAppController::supplementName()
 {
     return "InstalledAppController";
 }
 
-void InstalledAppController::getInstalledApps(const WebSecurityOrigin& url, WebPassOwnPtr<AppInstalledCallbacks> callback)
+void InstalledAppController::getInstalledApps(const WebSecurityOrigin& url, std::unique_ptr<AppInstalledCallbacks> callback)
 {
     // When detached, the client is no longer valid.
     if (!m_client) {
         callback.release()->onError();
         return;
     }
 
     // Client is expected to take ownership of the callback
-    m_client->getInstalledRelatedApps(url, callback);
+    m_client->getInstalledRelatedApps(url, std::move(callback));
 }
 
 void InstalledAppController::willDetachFrameHost()
 {
     m_client = nullptr;
 }
 
 DEFINE_TRACE(InstalledAppController)
 {
     Supplement<LocalFrame>::trace(visitor);
     LocalFrameLifecycleObserver::trace(visitor);
 }
 
 } // namespace blink