Bluetooth: mac: add connected BLE devices at startup

device/bluetooth/bluetooth_low_energy_device_mac.mm

Index: device/bluetooth/bluetooth_low_energy_device_mac.mm
diff --git a/device/bluetooth/bluetooth_low_energy_device_mac.mm b/device/bluetooth/bluetooth_low_energy_device_mac.mm
index ebf0f4cccaa613a1aabd9c8ab84bbba80289e908..30bd96f695fdb126605379b7b6e951243308a05d 100644
--- a/device/bluetooth/bluetooth_low_energy_device_mac.mm
+++ b/device/bluetooth/bluetooth_low_energy_device_mac.mm
@@ -33,6 +33,11 @@
   [peripheral_ setDelegate:peripheral_delegate_];
   identifier_ = GetPeripheralIdentifier(peripheral);
   hash_address_ = GetPeripheralHashAddress(peripheral);
+
+  // TODO(jracle): Following line is a patch to avoid being considered
+  // as a timed-out device in BluetoothAdapter::RemoveTimedOutDevices().
+  // Consider removing it and review BluetoothAdapter's logic.
+  UpdateTimestamp();

[jracle (use Gerrit), 2016/09/02 14:23:10]

I did this hack here, but I think we could instead try not removing BLE devices
in adapter if possible.
Maybe we could filter-out only classic devices and update
BluetoothAdapter::RemoveTimedOutDevices() instead.

 }
 
 BluetoothLowEnergyDeviceMac::~BluetoothLowEnergyDeviceMac() {