clang/win: Fix most -Wunused-function warnings in Chromium code.

device/bluetooth/bluetooth_low_energy_win.cc

 // Copyright 2014 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/bluetooth_low_energy_win.h"
 
 #include "base/files/file.h"
 #include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/win/scoped_handle.h"
@@ skipping 504 matching lines @@
   ScopedDeviceInfoSetHandle result(SetupDiGetClassDevs(
       &BluetoothClassGUID, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE));
   if (!result.IsValid()) {
     return HRESULT_FROM_WIN32(::GetLastError());
   }
 
   (*handle) = result.Pass();
   return S_OK;
 }
 
-// Opens a Device Info Set that can be used to enumerate Bluetooth LE devices
-// exposing a service GUID.
-HRESULT OpenBluetoothLowEnergyService(const GUID& service_guid,
-                                      ScopedDeviceInfoSetHandle* handle) {
-  ScopedDeviceInfoSetHandle result(SetupDiGetClassDevs(
-      &service_guid, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE));
-  if (!result.IsValid()) {
-    return HRESULT_FROM_WIN32(::GetLastError());
-  }
-
-  (*handle) = result.Pass();
-  return S_OK;
-}
-
 }  // namespace
 
 namespace device {
 namespace win {
 
 // static
 scoped_ptr<DeviceRegistryPropertyValue> DeviceRegistryPropertyValue::Create(
     DWORD property_type,
     scoped_ptr<uint8_t[]> value,
     size_t value_size) {
@@ skipping 119 matching lines @@
 
 bool ExtractBluetoothAddressFromDeviceInstanceIdForTesting(
     const std::string& instance_id,
     BLUETOOTH_ADDRESS* btha,
     std::string* error) {
   return ExtractBluetoothAddressFromDeviceInstanceId(instance_id, btha, error);
 }
 
 }  // namespace win
 }  // namespace device