Web MIDI: remove old platform API

Tools/DumpRenderTree/chromium/TestRunner/src/MockWebMIDIAccessor.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 28 matching lines @@
 }
 
 namespace WebTestRunner {
 
 class MockWebMIDIAccessor : public WebKit::WebMIDIAccessor {
 public:
     explicit MockWebMIDIAccessor(WebKit::WebMIDIAccessorClient*);
     virtual ~MockWebMIDIAccessor();
 
     // WebKit::WebMIDIAccessor implementation.
-    virtual void requestAccess(bool requestSysex) OVERRIDE;
+    virtual void startSession() OVERRIDE;
     virtual void sendMIDIData(
         unsigned portIndex,
         const unsigned char* data,
         size_t length,
         double timestamp) OVERRIDE { }
 
 private:
     WebKit::WebMIDIAccessorClient* m_client;
 };
 
 } // namespace WebTestRunner
 
 #endif // MockWebMIDIAccessor_h