Add installer_util_unittests to the GN windows build

chrome/installer/util/installer_state_unittest.cc

Index: chrome/installer/util/installer_state_unittest.cc
diff --git a/chrome/installer/util/installer_state_unittest.cc b/chrome/installer/util/installer_state_unittest.cc
index c9b5940baedf96ebb1b4b1bd05a944bbab3fbfbd..1d608296fc49e8bc5af84075080682d64814140e 100644
--- a/chrome/installer/util/installer_state_unittest.cc
+++ b/chrome/installer/util/installer_state_unittest.cc
@@ -28,14 +28,13 @@
 #include "chrome/installer/util/helper.h"
 #include "chrome/installer/util/installation_state.h"
 #include "chrome/installer/util/installer_state.h"
+#include "chrome/installer/util/installer_util_strings.h"
 #include "chrome/installer/util/master_preferences.h"
 #include "chrome/installer/util/product_unittest.h"
 #include "chrome/installer/util/util_constants.h"
 #include "chrome/installer/util/work_item.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-#include "installer_util_strings.h"  // NOLINT
-
 using base::win::RegKey;
 using installer::InstallationState;
 using installer::InstallerState;