Bluetooth: gather usage metrics

device/bluetooth/bluetooth_device_mac.mm

Index: device/bluetooth/bluetooth_device_mac.mm
diff --git a/device/bluetooth/bluetooth_device_mac.mm b/device/bluetooth/bluetooth_device_mac.mm
index 2042eaf056ccfc45984fc8346db671d78f329aea..ef54af1d063c8bf2a5910cd021386b744faf1821 100644
--- a/device/bluetooth/bluetooth_device_mac.mm
+++ b/device/bluetooth/bluetooth_device_mac.mm
@@ -82,6 +82,18 @@ std::string BluetoothDeviceMac::GetAddress() const {
   return base::SysNSStringToUTF8([device_ addressString]);
 }
 
+uint16 BluetoothDeviceMac::GetVendorID() const {
+  return 0;
+}
+
+uint16 BluetoothDeviceMac::GetProductID() const {
+  return 0;
+}
+
+uint16 BluetoothDeviceMac::GetDeviceID() const {
+  return 0;
+}
+
 bool BluetoothDeviceMac::IsPaired() const {
   return [device_ isPaired];
 }