[Bluetooth, Mac] Use lowercase for the bluetooth device address for M36.

This matches the current ChromeOS implementation.

BUG=355788
R=rpaquay@chromium.org

Review URL: https://codereview.chromium.org/279503003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@269596 0039d316-1c4b-4281-b951-d872f2087c98

device/bluetooth/bluetooth_device_mac.mm

@@ -253,7 +253,8 @@ std::string BluetoothDeviceMac::GetDeviceAddress(IOBluetoothDevice* device) {
 std::string BluetoothDeviceMac::NormalizeAddress(const std::string& address) {
   std::string normalized;
   base::ReplaceChars(address, "-", ":", &normalized);
-  StringToUpperASCII(&normalized);
+  // TODO(isherman): Restore StringToUpperASCII(&normalized) call for M37.
+  // http://crbug.com/371014
   return normalized;
 }