Handle change of BLE address after pairing

components/proximity_auth/ble/bluetooth_low_energy_connection.cc

Index: components/proximity_auth/ble/bluetooth_low_energy_connection.cc
diff --git a/components/proximity_auth/ble/bluetooth_low_energy_connection.cc b/components/proximity_auth/ble/bluetooth_low_energy_connection.cc
index 52af29b32bf4fc1c35bb2133c6c32e93eb149a23..839e442d2bbf53276c7bfc21c67ab84a2b90a602 100644
--- a/components/proximity_auth/ble/bluetooth_low_energy_connection.cc
+++ b/components/proximity_auth/ble/bluetooth_low_energy_connection.cc
@@ -117,7 +117,7 @@ void BluetoothLowEnergyConnection::CreateGattConnection() {
     PA_LOG(INFO) << "Creating GATT connection with "
                  << remote_device->GetAddress();
 
-    remote_device->CreateGattConnection(
+    gatt_connection_ = remote_device->CreateGattConnection(
         base::Bind(&BluetoothLowEnergyConnection::OnGattConnectionCreated,
                    weak_ptr_factory_.GetWeakPtr()),
         base::Bind(&BluetoothLowEnergyConnection::OnCreateGattConnectionError,
@@ -336,8 +336,7 @@ void BluetoothLowEnergyConnection::OnCreateGattConnectionError(
   Disconnect();
 }
 
-void BluetoothLowEnergyConnection::OnGattConnectionCreated(
-    scoped_ptr<device::BluetoothGattConnection> gatt_connection) {
+void BluetoothLowEnergyConnection::OnGattConnectionCreated() {
   DCHECK(sub_status() == SubStatus::WAITING_GATT_CONNECTION);
   PA_LOG(INFO) << "GATT connection with " << gatt_connection->GetDeviceAddress()
                << " created.";
@@ -346,7 +345,6 @@ void BluetoothLowEnergyConnection::OnGattConnectionCreated(
   // Informing |bluetooth_trottler_| a new connection was established.
   bluetooth_throttler_->OnConnection(this);
 
-  gatt_connection_ = gatt_connection.Pass();
   SetSubStatus(SubStatus::WAITING_CHARACTERISTICS);
   characteristic_finder_.reset(CreateCharacteristicsFinder(
       base::Bind(&BluetoothLowEnergyConnection::OnCharacteristicsFound,