Fix pointer truncation in component_unittests.

components/storage_monitor/test_storage_monitor_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.
 //
 // TestStorageMonitorWin implementation.
 
 #include "components/storage_monitor/test_storage_monitor_win.h"
 
 #include "components/storage_monitor/test_portable_device_watcher_win.h"
 #include "components/storage_monitor/test_volume_mount_watcher_win.h"
 
 namespace storage_monitor {
 
 TestStorageMonitorWin::TestStorageMonitorWin(
     TestVolumeMountWatcherWin* volume_mount_watcher,
     TestPortableDeviceWatcherWin* portable_device_watcher)
     : StorageMonitorWin(volume_mount_watcher, portable_device_watcher) {
   DCHECK(volume_mount_watcher_);
   DCHECK(portable_device_watcher);
 }
 
 TestStorageMonitorWin::~TestStorageMonitorWin() {
 }
 
-void TestStorageMonitorWin::InjectDeviceChange(UINT event_type, DWORD data) {
+void TestStorageMonitorWin::InjectDeviceChange(UINT event_type, LPARAM data) {
   OnDeviceChange(event_type, data);
 }
 
 VolumeMountWatcherWin*
 TestStorageMonitorWin::volume_mount_watcher() {
   return volume_mount_watcher_.get();
 }
 
 StorageMonitor::Receiver* TestStorageMonitorWin::receiver() const {
   return StorageMonitor::receiver();
 }
 
 }  // namespace storage_monitor