Clear the BLE services list on disconnect.

device/bluetooth/bluetooth_device_android.cc

Index: device/bluetooth/bluetooth_device_android.cc
diff --git a/device/bluetooth/bluetooth_device_android.cc b/device/bluetooth/bluetooth_device_android.cc
index 71e4d0578f3c33784ca740aae4d666a92697a311..71ceb666998d4d66ba56ba4138cb005e4fe6c78e 100644
--- a/device/bluetooth/bluetooth_device_android.cc
+++ b/device/bluetooth/bluetooth_device_android.cc
@@ -210,6 +210,9 @@ void BluetoothDeviceAndroid::OnConnectionStateChange(
   if (gatt_connected_) {
     DidConnectGatt();
   } else {
+    gatt_services_.clear();
+    SetGattServicesDiscoveryComplete(false);
+
     switch (status) {   // Constants are from android.bluetooth.BluetoothGatt.
       case 0x0000008f:  // GATT_CONNECTION_CONGESTED
         return DidFailToConnectGatt(ERROR_CONNECTION_CONGESTED);
@@ -241,6 +244,7 @@ void BluetoothDeviceAndroid::OnConnectionStateChange(
 void BluetoothDeviceAndroid::OnGattServicesDiscovered(
     JNIEnv* env,
     const JavaParamRef<jobject>& jcaller) {
+  SetGattServicesDiscoveryComplete(true);
   FOR_EACH_OBSERVER(BluetoothAdapter::Observer, GetAdapter()->GetObservers(),
                     GattServicesDiscovered(GetAdapter(), this));
 }