CallbackPromiseAdapter types should be more compatible with WebCallbacks (1/3).

Source/modules/bluetooth/BluetoothGATTRemoteServer.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 BluetoothGATTRemoteServer_h
 #define BluetoothGATTRemoteServer_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/modules/v8/UnionTypesModules.h"
 #include "platform/heap/Heap.h"
 #include "public/platform/modules/bluetooth/WebBluetoothGATTRemoteServer.h"
+#include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class ScriptPromise;
 class ScriptPromiseResolver;
 class ScriptState;
 
 // BluetoothGATTRemoteServer provides a way to interact with a connected bluetooth peripheral.
 //
 // Callbacks providing WebBluetoothGATTRemoteServer objects are handled by
 // CallbackPromiseAdapter templatized with this class. See this class's
 // "Interface required by CallbackPromiseAdapter" section and the
 // CallbackPromiseAdapter class comments.
 class BluetoothGATTRemoteServer final
     : public GarbageCollectedFinalized<BluetoothGATTRemoteServer>
     , public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     BluetoothGATTRemoteServer(PassOwnPtr<WebBluetoothGATTRemoteServer>);
 
     // Interface required by CallbackPromiseAdapter:
-    typedef WebBluetoothGATTRemoteServer WebType;
+    using WebType = OwnPtr<WebBluetoothGATTRemoteServer>;
     static BluetoothGATTRemoteServer* take(ScriptPromiseResolver*, PassOwnPtr<WebBluetoothGATTRemoteServer>);
 
     // Interface required by Garbage Collectoin:
     DEFINE_INLINE_TRACE() { }
 
     // IDL exposed interface:
     bool connected() { return m_webGATT->connected; }
     ScriptPromise getPrimaryService(ScriptState*, const StringOrUnsignedLong& service, ExceptionState&);
 
 private:
     OwnPtr<WebBluetoothGATTRemoteServer> m_webGATT;
 };
 
 } // namespace blink
 
 #endif // BluetoothDevice_h