Web MIDI: distributes MIDIPort information asynchronously

media/midi/midi_manager_unittest.cc

Index: media/midi/midi_manager_unittest.cc
diff --git a/media/midi/midi_manager_unittest.cc b/media/midi/midi_manager_unittest.cc
index 4297550547dd1eebfa702214757d49d67baff761..63bd17d7de3815e2b72262140ba6e91df4857d3b 100644
--- a/media/midi/midi_manager_unittest.cc
+++ b/media/midi/midi_manager_unittest.cc
@@ -60,6 +60,9 @@ class FakeMidiManagerClient : public MidiManagerClient {
   virtual ~FakeMidiManagerClient() {}
 
   // MidiManagerClient implementation.
+  virtual void AddInputPort(const MidiPortInfo& info) override {}
+  virtual void AddOutputPort(const MidiPortInfo& info) override {}
+
   virtual void CompleteStartSession(MidiResult result) override {
     EXPECT_TRUE(wait_for_result_);
     result_ = result;