Fix more remaining FilePath -> base::FilePath.

cloud_print/virtual_driver/win/port_monitor/port_monitor_dll.cc

Index: cloud_print/virtual_driver/win/port_monitor/port_monitor_dll.cc
diff --git a/cloud_print/virtual_driver/win/port_monitor/port_monitor_dll.cc b/cloud_print/virtual_driver/win/port_monitor/port_monitor_dll.cc
index c6acfda3f79d2d6186d2eb28f925130f1badabc4..e9cf3b57044a61e99a60bc0faa04e71f2af9827b 100644
--- a/cloud_print/virtual_driver/win/port_monitor/port_monitor_dll.cc
+++ b/cloud_print/virtual_driver/win/port_monitor/port_monitor_dll.cc
@@ -39,7 +39,7 @@ namespace {
 
 // Returns true if Xps support is installed.
 bool XpsIsInstalled() {
-  FilePath xps_path;
+  base::FilePath xps_path;
   if (!SUCCEEDED(GetPrinterDriverDir(&xps_path))) {
     return false;
   }
@@ -80,7 +80,7 @@ HRESULT WINAPI DllRegisterServer(void) {
   MONITOR_INFO_2 monitor_info = {0};
   // YUCK!!!  I can either copy the constant, const_cast, or define my own
   // MONITOR_INFO_2 that will take const strings.
-  FilePath dll_path(cloud_print::GetPortMonitorDllName());
+  base::FilePath dll_path(cloud_print::GetPortMonitorDllName());
   monitor_info.pDLLName = const_cast<LPWSTR>(dll_path.value().c_str());
   monitor_info.pName = const_cast<LPWSTR>(dll_path.value().c_str());
   if (AddMonitor(NULL, 2, reinterpret_cast<BYTE*>(&monitor_info))) {
@@ -94,7 +94,7 @@ HRESULT WINAPI DllUnregisterServer(void) {
   if (!cloud_print::CanRegister()) {
     return E_ACCESSDENIED;
   }
-  FilePath dll_path(cloud_print::GetPortMonitorDllName());
+  base::FilePath dll_path(cloud_print::GetPortMonitorDllName());
   if (DeleteMonitor(NULL,
                     NULL,
                     const_cast<LPWSTR>(dll_path.value().c_str()))) {