bluetooth: mac: add connected LE devices to chooser

device/bluetooth/test/bluetooth_test.h

Index: device/bluetooth/test/bluetooth_test.h
diff --git a/device/bluetooth/test/bluetooth_test.h b/device/bluetooth/test/bluetooth_test.h
index 9f5468ef7c1fb3b44700ee5aad8d9d434ef945c2..c85ab5d55ced88f2d1ecc999691cf5a10f2ef88d 100644
--- a/device/bluetooth/test/bluetooth_test.h
+++ b/device/bluetooth/test/bluetooth_test.h
@@ -41,6 +41,21 @@ class BluetoothTestBase : public testing::Test {
  public:
   enum class Call { EXPECTED, NOT_EXPECTED };
 
+  // List of devices that can be simulated with
+  // SimulateConnectedLowEnergyDevice().
+  // GENERIC_DEVICE:
+  //   - Name:     kTestDeviceName
+  //   - Address:  kTestPeripheralUUID1
+  //   - Services: [ kTestUUIDGenericAccess ]
+  // HEART_RATE_DEVICE:
+  //   - Name:     kTestDeviceName
+  //   - Address:  kTestPeripheralUUID2
+  //   - Services: [ kTestUUIDGenericAccess, kTestUUIDHeartRate]
+  enum class ConnectedDeviceType {
+    GENERIC_DEVICE,
+    HEART_RATE_DEVICE,
+  };
+
   static const std::string kTestAdapterName;
   static const std::string kTestAdapterAddress;
 
@@ -150,6 +165,11 @@ class BluetoothTestBase : public testing::Test {
   //      Supports BR/EDR and LE.
   virtual BluetoothDevice* SimulateLowEnergyDevice(int device_ordinal);
 
+  // Simulates a connected low energy device. Used before starting a low energy
+  // discovey session.
+  virtual void SimulateConnectedLowEnergyDevice(
+      ConnectedDeviceType device_ordinal){};
+
   // Create a fake classic device and discover it. The device will have
   // name kTestDeviceName, no advertised UUIDs and address kTestDeviceAddress3.
   virtual BluetoothDevice* SimulateClassicDevice();