Delete utf_util_win.h.

webrtc/test/testsupport/fileutils.cc

Index: webrtc/test/testsupport/fileutils.cc
diff --git a/webrtc/test/testsupport/fileutils.cc b/webrtc/test/testsupport/fileutils.cc
index 2d3ea00925a10fc3ea7306eaf0454e41f4e8658f..2555f5cc07102e4bd1305e1e2adb73719b96fc67 100644
--- a/webrtc/test/testsupport/fileutils.cc
+++ b/webrtc/test/testsupport/fileutils.cc
@@ -21,7 +21,7 @@
 #include "Shlwapi.h"
 #include "WinDef.h"
 
-#include "webrtc/system_wrappers/include/utf_util_win.h"
+#include "webrtc/base/win32.h"
 #define GET_CURRENT_DIR _getcwd
 #else
 #include <unistd.h>
@@ -183,9 +183,9 @@ std::string WorkingDir() {
 std::string TempFilename(const std::string &dir, const std::string &prefix) {
 #ifdef WIN32
   wchar_t filename[MAX_PATH];
-  if (::GetTempFileName(ToUtf16(dir).c_str(),
-                        ToUtf16(prefix).c_str(), 0, filename) != 0)
-    return ToUtf8(filename);
+  if (::GetTempFileName(rtc::ToUtf16(dir).c_str(),
+                        rtc::ToUtf16(prefix).c_str(), 0, filename) != 0)
+    return rtc::ToUtf8(filename);
   assert(false);
   return "";
 #else