Web MIDI API (work in progress)

Source/modules/webaudio/AudioContext.cpp

Index: Source/modules/webaudio/AudioContext.cpp
diff --git a/Source/modules/webaudio/AudioContext.cpp b/Source/modules/webaudio/AudioContext.cpp
index d375dec5b0f5dd0efbc111c98a24af785da481bc..a185e9f79a3ee00348728e798181ba5ce6ec26ba 100644
--- a/Source/modules/webaudio/AudioContext.cpp
+++ b/Source/modules/webaudio/AudioContext.cpp
@@ -132,6 +132,8 @@ AudioContext::AudioContext(Document* document)
     // It's not that useful to have a callback function for this since the audio thread automatically starts rendering on the graph
     // when this has finished (see AudioDestinationNode).
     m_hrtfDatabaseLoader = HRTFDatabaseLoader::createAndLoadAsynchronouslyIfNecessary(sampleRate());
+    
+    m_midiAccess = MIDIAccess::create(scriptExecutionContext());
 }
 
 // Constructor for offline (non-realtime) rendering.