bluetooth: Create base class BluetoothDevice::CreateGattConnection impl.

device/bluetooth/bluetooth_classic_device_mac.mm

Index: device/bluetooth/bluetooth_classic_device_mac.mm
diff --git a/device/bluetooth/bluetooth_classic_device_mac.mm b/device/bluetooth/bluetooth_classic_device_mac.mm
index f7743e0dca26c6167ea07c3f4a00f6aa5378d4eb..e524e8123db2493213c76c6c6977c74d03b97788 100644
--- a/device/bluetooth/bluetooth_classic_device_mac.mm
+++ b/device/bluetooth/bluetooth_classic_device_mac.mm
@@ -74,6 +74,13 @@ std::string BluetoothClassicDeviceMac::GetDeviceName() const {
   return base::SysNSStringToUTF8([device_ name]);
 }
 
+void BluetoothClassicDeviceMac::CreateGattConnectionImpl() {
+  // Classic devices do not support GATT connection.
+  DidFailToConnectGatt(ERROR_UNSUPPORTED_DEVICE);
+}
+
+void BluetoothClassicDeviceMac::DisconnectGatt() {}
+
 std::string BluetoothClassicDeviceMac::GetAddress() const {
   return GetDeviceAddress(device_);
 }
@@ -103,6 +110,10 @@ bool BluetoothClassicDeviceMac::IsConnected() const {
   return [device_ isConnected];
 }
 
+bool BluetoothClassicDeviceMac::IsGattConnected() const {
+  return false;  // Classic devices do not support GATT connection.
+}
+
 bool BluetoothClassicDeviceMac::IsConnectable() const {
   return false;
 }