Web MIDI: call AccumulateMidiBytesSent() after operation finished

media/midi/midi_manager.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_MIDI_MIDI_MANAGER_H_
 #define MEDIA_MIDI_MIDI_MANAGER_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 68 matching lines @@
   // and the client is registered to receive MIDI data.
   // CompleteStartSession() is called with MIDI_OK if the session is started.
   // Otherwise CompleteStartSession() is called with proper MidiResult code.
   // StartSession() and EndSession() can be called on the Chrome_IOThread.
   // CompleteStartSession() will be invoked on the same Chrome_IOThread.
   void StartSession(MidiManagerClient* client);
 
   // A client calls EndSession() to stop receiving MIDI data.
   void EndSession(MidiManagerClient* client);
 
+  // Invoke AccumulateMidiBytesSent() for |client| safely. If the session was
+  // already close, do nothing.

[yhirano, 2015/04/07 12:06:33]

closed?

[Takashi Toyoshima, 2015/04/07 12:50:48]

Done.

+  void AccumulateMidiBytesSent(MidiManagerClient* client, size_t n);
+
   // DispatchSendMidiData() is called when MIDI data should be sent to the MIDI
   // system.
   // This method is supposed to return immediately and should not block.
   // |port_index| represents the specific output port from output_ports().
   // |data| represents a series of bytes encoding one or more MIDI messages.
   // |length| is the number of bytes in |data|.
   // |timestamp| is the time to send the data, in seconds. A value of 0
   // means send "now" or as soon as possible.
   // The default implementation is for unsupported platforms.
   virtual void DispatchSendMidiData(MidiManagerClient* client,
@@ skipping 76 matching lines @@
   // Protects access to |clients_|, |pending_clients_|, |initialized_|,
   // |result_|, |input_ports_| and |output_ports_|.
   base::Lock lock_;
 
   DISALLOW_COPY_AND_ASSIGN(MidiManager);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MIDI_MIDI_MANAGER_H_