bluetooth: Stop support of reconnecting devices not supporting pairing

device/bluetooth/bluez/bluetooth_device_bluez.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "device/bluetooth/bluez/bluetooth_device_bluez.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 308 matching lines @@
   else
     return base::nullopt;
 }
 
 bool BluetoothDeviceBlueZ::IsPaired() const {
   bluez::BluetoothDeviceClient::Properties* properties =
       bluez::BluezDBusManager::Get()->GetBluetoothDeviceClient()->GetProperties(
           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 {
   bluez::BluetoothDeviceClient::Properties* properties =
       bluez::BluezDBusManager::Get()->GetBluetoothDeviceClient()->GetProperties(
           object_path_);
   DCHECK(properties);
 
   return properties->connected.value();
 }
@@ skipping 92 matching lines @@
 void BluetoothDeviceBlueZ::Connect(
     BluetoothDevice::PairingDelegate* pairing_delegate,
     const base::Closure& callback,
     const ConnectErrorCallback& error_callback) {
   if (num_connecting_calls_++ == 0)
     adapter()->NotifyDeviceChanged(this);
 
   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 {
     // Initiate high-security connection with pairing.
     BeginPairing(pairing_delegate);
 
     bluez::BluezDBusManager::Get()->GetBluetoothDeviceClient()->Pair(
         object_path_,
         base::Bind(&BluetoothDeviceBlueZ::OnPairDuringConnect,
                    weak_ptr_factory_.GetWeakPtr(), callback, error_callback),
@@ skipping 491 matching lines @@
 void BluetoothDeviceBlueZ::OnForgetError(const ErrorCallback& error_callback,
                                          const std::string& error_name,
                                          const std::string& error_message) {
   LOG(WARNING) << object_path_.value()
                << ": Failed to remove device: " << error_name << ": "
                << error_message;
   error_callback.Run();
 }
 
 }  // namespace bluez