[Clean up] Expose ConnectToServiceInsecurely as a BluetoothDevice API on all platforms.

components/proximity_auth/bluetooth_util_chromeos.cc

Index: components/proximity_auth/bluetooth_util_chromeos.cc
diff --git a/components/proximity_auth/bluetooth_util_chromeos.cc b/components/proximity_auth/bluetooth_util_chromeos.cc
index 162ea639f94e32159240173e94336aab361e3132..86a0758fc913580f2287e14bcca444c9a842cb59 100644
--- a/components/proximity_auth/bluetooth_util_chromeos.cc
+++ b/components/proximity_auth/bluetooth_util_chromeos.cc
@@ -21,7 +21,6 @@
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/time/time.h"
 #include "device/bluetooth/bluetooth_device.h"
-#include "device/bluetooth/bluetooth_device_chromeos.h"
 #include "net/socket/socket_descriptor.h"
 
 // The bluez headers are (intentionally) not available within the Chromium
@@ -156,14 +155,5 @@ void SeekDeviceByAddress(const std::string& device_address,
       base::Bind(&OnSeekDeviceResult, callback, error_callback));
 }
 
-void ConnectToServiceInsecurely(
-    device::BluetoothDevice* device,
-    const device::BluetoothUUID& uuid,
-    const BluetoothDevice::ConnectToServiceCallback& callback,
-    const BluetoothDevice::ConnectToServiceErrorCallback& error_callback) {
-  static_cast<chromeos::BluetoothDeviceChromeOS*>(device)
-      ->ConnectToServiceInsecurely(uuid, callback, error_callback);
-}
-
 }  // namespace bluetooth_util
 }  // namespace proximity_auth