bluetooth: mac: add connected LE devices to chooser

device/bluetooth/bluetooth_adapter_mac.h

Index: device/bluetooth/bluetooth_adapter_mac.h
diff --git a/device/bluetooth/bluetooth_adapter_mac.h b/device/bluetooth/bluetooth_adapter_mac.h
index 994610b4a5f2cba5a7ece47b517b1c32764bcb38..07c89291ecbce43c8b5496aae3b601f4295a0e82 100644
--- a/device/bluetooth/bluetooth_adapter_mac.h
+++ b/device/bluetooth/bluetooth_adapter_mac.h
@@ -53,6 +53,10 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothAdapterMac
 
   // Converts CBUUID into BluetoothUUID
   static BluetoothUUID BluetoothUUIDWithCBUUID(CBUUID* UUID);
+  // Converts list of BluetoothUUID to NSArray of CBUUID. Returns nil if the
+  // list is empty.
+  static NSArray* CBUUIDArrayWithUUIDList(
+      BluetoothDevice::UUIDList services_uuids);
 
   // BluetoothAdapter overrides:
   std::string GetAddress() const override;
@@ -71,6 +75,7 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothAdapterMac
                        const base::Closure& callback,
                        const ErrorCallback& error_callback) override;
   bool IsDiscovering() const override;
+  void RetrievedConnectedPeripherals() override;
   UUIDList GetUUIDs() const override;
   void CreateRfcommService(
       const BluetoothUUID& uuid,