device/blueooth: Add BlueZ unit test for BluetoothDevice::SetConnectionInterval.

device/bluetooth/dbus/fake_bluetooth_device_client.cc

 // Copyright (c) 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/dbus/fake_bluetooth_device_client.h"
 
 #include <fcntl.h>
 #include <stddef.h>
 #include <sys/socket.h>
 #include <sys/types.h>
@@ skipping 583 matching lines @@
 
   callback.Run(connection_rssi_, transmit_power_, max_transmit_power_);
 }
 
 void FakeBluetoothDeviceClient::SetLEConnectionParameters(
     const dbus::ObjectPath& object_path,
     const ConnectionParameters& conn_params,
     const base::Closure& callback,
     const ErrorCallback& error_callback) {
   Properties* properties = GetProperties(object_path);
-  if (!properties->connected.value()) {
-    error_callback.Run(bluetooth_device::kErrorNotConnected, "Not Connected");
+  if (!properties->type.is_valid() || properties->type.value() == kTypeBredr) {
+    error_callback.Run(bluetooth_device::kErrorFailed,
+                       "BR/EDR devices not supported");
     return;
   }
 
   callback.Run();
 }
 
 void FakeBluetoothDeviceClient::GetServiceRecords(
     const dbus::ObjectPath& object_path,
     const ServiceRecordsCallback& callback,
     const ErrorCallback& error_callback) {
@@ skipping 1243 matching lines @@
     properties->service_data.set_valid(true);
   }
 
   properties_map_.insert(std::make_pair(device_path, std::move(properties)));
   device_list_.push_back(device_path);
   for (auto& observer : observers_)
     observer.DeviceAdded(device_path);
 }
 
 }  // namespace bluez