Moved GetCurrentUserName to service_utils.*

cloud_print/service/win/cloud_print_service.cc

Index: cloud_print/service/win/cloud_print_service.cc
diff --git a/cloud_print/service/win/cloud_print_service.cc b/cloud_print/service/win/cloud_print_service.cc
index 187a6edcee51228347feb41b32e434090747fc9b..c1299c8b3c6bad15c29c9169b14f3b6b1bef667e 100644
--- a/cloud_print/service/win/cloud_print_service.cc
+++ b/cloud_print/service/win/cloud_print_service.cc
@@ -21,6 +21,7 @@
 #include "cloud_print/service/service_switches.h"
 #include "cloud_print/service/win/chrome_launcher.h"
 #include "cloud_print/service/win/service_controller.h"
+#include "cloud_print/service/win/service_utils.h"
 #include "printing/backend/print_backend.h"
 
 namespace {
@@ -110,19 +111,6 @@ bool AskUser(const std::string& request) {
   }
 }
 
-string16 GetCurrentUserName() {
-  ULONG size = 0;
-  string16 result;
-  ::GetUserNameEx(::NameSamCompatible, NULL, &size);
-  result.resize(size);
-  if (result.empty())
-    return result;
-  if (!::GetUserNameEx(::NameSamCompatible, &result[0], &size))
-    result.clear();
-  result.resize(size);
-  return result;
-}
-
 }  // namespace
 
 class CloudPrintServiceModule