Web MIDI: add open() and close() to MIDIPort

Source/modules/webmidi/MIDIAccessInitializer.h

Index: Source/modules/webmidi/MIDIAccessInitializer.h
diff --git a/Source/modules/webmidi/MIDIAccessInitializer.h b/Source/modules/webmidi/MIDIAccessInitializer.h
index de9d3e3159991322496dfe5a2c3d696b5438fe58..9fd9d4c8b5ed3e1ccca57dcdce3d10b6ec576367 100644
--- a/Source/modules/webmidi/MIDIAccessInitializer.h
+++ b/Source/modules/webmidi/MIDIAccessInitializer.h
@@ -27,15 +27,15 @@ public:
         String name;
         MIDIPort::MIDIPortTypeCode type;
         String version;
-        bool isActive;
+        MIDIAccessor::MIDIPortState state;
 
-        PortDescriptor(const String& id, const String& manufacturer, const String& name, MIDIPort::MIDIPortTypeCode type, const String& version, bool isActive)
+        PortDescriptor(const String& id, const String& manufacturer, const String& name, MIDIPort::MIDIPortTypeCode type, const String& version, MIDIAccessor::MIDIPortState state)
             : id(id)
             , manufacturer(manufacturer)
             , name(name)
             , type(type)
             , version(version)
-            , isActive(isActive) { }
+            , state(state) { }
     };
 
     static ScriptPromise start(ScriptState* scriptState, const MIDIOptions& options)
@@ -46,15 +46,15 @@ public:
         return resolver->start();
     }
 
-    virtual ~MIDIAccessInitializer();
+    ~MIDIAccessInitializer() override;
 
     // MIDIAccessorClient
-    virtual void didAddInputPort(const String& id, const String& manufacturer, const String& name, const String& version, bool isActive) override;
-    virtual void didAddOutputPort(const String& id, const String& manufacturer, const String& name, const String& version, bool isActive) override;
-    virtual void didSetInputPortState(unsigned portIndex, bool isActive) override;
-    virtual void didSetOutputPortState(unsigned portIndex, bool isActive) override;
-    virtual void didStartSession(bool success, const String& error, const String& message) override;
-    virtual void didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp) override { }
+    void didAddInputPort(const String& id, const String& manufacturer, const String& name, const String& version, MIDIAccessor::MIDIPortState) override;
+    void didAddOutputPort(const String& id, const String& manufacturer, const String& name, const String& version, MIDIAccessor::MIDIPortState) override;
+    void didSetInputPortState(unsigned portIndex, MIDIAccessor::MIDIPortState) override;
+    void didSetOutputPortState(unsigned portIndex, MIDIAccessor::MIDIPortState) override;
+    void didStartSession(bool success, const String& error, const String& message) override;
+    void didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp) override { }
 
     void resolveSysexPermission(bool allowed);
     SecurityOrigin* securityOrigin() const;