device/bluetooth: Add read_mtu as an argument of BluetoothAudioSinkDataAvailable.

device/bluetooth/bluetooth_audio_sink_chromeos.cc

Index: device/bluetooth/bluetooth_audio_sink_chromeos.cc
diff --git a/device/bluetooth/bluetooth_audio_sink_chromeos.cc b/device/bluetooth/bluetooth_audio_sink_chromeos.cc
index 0f76be8ab1d1664a735e27129b4a2cf894bb4e04..dcd751bcd4cd37ac90830862ba35639b66ccd53a 100644
--- a/device/bluetooth/bluetooth_audio_sink_chromeos.cc
+++ b/device/bluetooth/bluetooth_audio_sink_chromeos.cc
@@ -400,8 +400,9 @@ void BluetoothAudioSinkChromeOS::ReadFromFile() {
   }
 
   VLOG(1) << "ReadFromFile - read " << size << " bytes";
-  FOR_EACH_OBSERVER(BluetoothAudioSink::Observer, observers_,
-                    BluetoothAudioSinkDataAvailable(this, data_.get(), size));
+  FOR_EACH_OBSERVER(
+      BluetoothAudioSink::Observer, observers_,
+      BluetoothAudioSinkDataAvailable(this, data_.get(), size, read_mtu_));
 }
 
 void BluetoothAudioSinkChromeOS::StateChanged(