bluetooth: Stop support of reconnecting devices not supporting pairing

device/bluetooth/bluez/bluetooth_device_bluez.cc

Index: device/bluetooth/bluez/bluetooth_device_bluez.cc
diff --git a/device/bluetooth/bluez/bluetooth_device_bluez.cc b/device/bluetooth/bluez/bluetooth_device_bluez.cc
index 8e099686eeec7a45f806055c3c2b5f30e4962a84..2df2d4379d4b185dfec6c82d249c8659ff5c232e 100644
--- a/device/bluetooth/bluez/bluetooth_device_bluez.cc
+++ b/device/bluetooth/bluez/bluetooth_device_bluez.cc
@@ -333,10 +333,11 @@ bool BluetoothDeviceBlueZ::IsPaired() const {
           object_path_);
   DCHECK(properties);
 
-  // Trusted devices are devices that don't support pairing but that the
-  // user has explicitly connected; it makes no sense for UI purposes to
-  // treat them differently from each other.
-  return properties->paired.value() || properties->trusted.value();
+  // The Paired property reflects the successful pairing for BR/EDR/LE. The
+  // value of the Paired property is always false for the devices that don't
+  // support pairing. Once a device is paired successfully, both Paired and
+  // Trusted properties will be set to true.
+  return properties->paired.value();
 }
 
 bool BluetoothDeviceBlueZ::IsConnected() const {
@@ -449,7 +450,7 @@ void BluetoothDeviceBlueZ::Connect(
   VLOG(1) << object_path_.value() << ": Connecting, " << num_connecting_calls_
           << " in progress";
 
-  if (IsPaired() || !pairing_delegate || !IsPairable()) {
+  if (IsPaired() || !pairing_delegate) {
     // No need to pair, or unable to, skip straight to connection.
     ConnectInternal(false, callback, error_callback);
   } else {