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

Source/modules/webmidi/MIDIAccessorClient.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef MIDIAccessorClient_h
 #define MIDIAccessorClient_h
 
+#include "modules/webmidi/MIDIAccessor.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 
 class MIDIAccessorClient {
 public:
-    virtual void didAddInputPort(const String& id, const String& manufacturer, const String& name, const String& version, bool isActive) = 0;
-    virtual void didAddOutputPort(const String& id, const String& manufacturer, const String& name, const String& version, bool isActive) = 0;
-    virtual void didSetInputPortState(unsigned portIndex, bool isActive) = 0;
-    virtual void didSetOutputPortState(unsigned portIndex, bool isActive) = 0;
+    virtual void didAddInputPort(const String& id, const String& manufacturer, const String& name, const String& version, MIDIAccessor::MIDIPortState) = 0;
+    virtual void didAddOutputPort(const String& id, const String& manufacturer, const String& name, const String& version, MIDIAccessor::MIDIPortState) = 0;
+    virtual void didSetInputPortState(unsigned portIndex, MIDIAccessor::MIDIPortState) = 0;
+    virtual void didSetOutputPortState(unsigned portIndex, MIDIAccessor::MIDIPortState) = 0;
 
     virtual void didStartSession(bool success, const String& error, const String& message) = 0;
     virtual void didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp) = 0;
 };
 
 } // namespace blink
 
 #endif // MIDIAccessorClient_h