Apply OwnPtr|PassOwnPtr to handle member variables and arguments in MIDIClient

Source/modules/webmidi/MIDIController.h

Index: Source/modules/webmidi/MIDIController.h
diff --git a/Source/modules/webmidi/MIDIController.h b/Source/modules/webmidi/MIDIController.h
index 3e0a9de7128834f429a7c7a31676a1986e032ca9..35fcf891e116351f437b3c0dcde74b8f540bd5f4 100644
--- a/Source/modules/webmidi/MIDIController.h
+++ b/Source/modules/webmidi/MIDIController.h
@@ -46,15 +46,15 @@ public:
     void requestSysexPermission(PassRefPtrWillBeRawPtr<MIDIAccess>);
     void cancelSysexPermissionRequest(MIDIAccess*);
 
-    static PassOwnPtr<MIDIController> create(MIDIClient*);
+    static PassOwnPtr<MIDIController> create(PassOwnPtr<MIDIClient>);
     static const char* supplementName();
     static MIDIController* from(Page* page) { return static_cast<MIDIController*>(Supplement<Page>::from(page, supplementName())); }
 
 protected:
-    explicit MIDIController(MIDIClient*);
+    explicit MIDIController(PassOwnPtr<MIDIClient>);
 
 private:
-    MIDIClient* m_client;
+    OwnPtr<MIDIClient> m_client;
 };
 
 } // namespace WebCore