Web MIDI: introduce WebMIDIClient API to request a permission

Source/core/platform/midi/MIDIAccessor.cpp

 /*
  * 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 38 matching lines @@
 MIDIAccessor::MIDIAccessor(MIDIAccessorClient* client)
     : m_client(client)
 {
     ASSERT(client);
 
     m_accessor = adoptPtr(WebKit::Platform::current()->createMIDIAccessor(this));
 
     ASSERT(m_accessor);
 }
 
-void MIDIAccessor::requestAccess(bool access)
+void MIDIAccessor::requestAccess(const String& origin, bool access)
 {
-    m_accessor->requestAccess(access);
+    m_accessor->requestAccess(WebString(origin), access);
 }
 
 void MIDIAccessor::sendMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp)
 {
     m_accessor->sendMIDIData(portIndex, data, length, timeStamp);
 }
 
 void MIDIAccessor::didAddInputPort(const WebString& id, const WebString& manufacturer, const WebString& name, const WebString& version)
 {
     m_client->didAddInputPort(id, manufacturer, name, version);
@@ skipping 13 matching lines @@
 {
     m_client->didBlockAccess();
 }
 
 void MIDIAccessor::didReceiveMIDIData(unsigned portIndex, const unsigned char* data, size_t length, double timeStamp)
 {
     m_client->didReceiveMIDIData(portIndex, data, length, timeStamp);
 }
 
 } // namespace WebCore