Bluetooth: macOS: Adding logs

device/bluetooth/bluetooth_low_energy_device_mac.h

Index: device/bluetooth/bluetooth_low_energy_device_mac.h
diff --git a/device/bluetooth/bluetooth_low_energy_device_mac.h b/device/bluetooth/bluetooth_low_energy_device_mac.h
index b25bfff5aecc901ecf69e6055aee8140767817b7..5bb05647f249b5120b3d367b2a3d69872adb128c 100644
--- a/device/bluetooth/bluetooth_low_energy_device_mac.h
+++ b/device/bluetooth/bluetooth_low_energy_device_mac.h
@@ -126,6 +126,9 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothLowEnergyDeviceMac
   // Callback used when the CoreBluetooth Peripheral is disconnected.
   void DidDisconnectPeripheral(NSError* error);
 
+  // Returns a description for the device, that should be used for logs.

[ortuno, 2017/03/14 00:34:33]

I should have suggested this before but I wasn't sure if you were planning on
using ToString outside of logging.

Given that all uses of the method are for logging we can add an implementation
of the << operator:

DEVICE_BLUETOOTH_EXPORT std::ostream& operator<<(std::ostream& out,
                                          const BluetoothDevice& device);

Then you can just do:

VLOG(1) << *this;

See
https://cs.chromium.org/chromium/src/content/common/bluetooth/web_bluetooth_d...

[jlebel, 2017/03/15 01:08:40]

Done.

+  std::string ToString() const;
+
   // CoreBluetooth data structure.
   base::scoped_nsobject<CBPeripheral> peripheral_;