Deprecate wstring version of PathService::Get() in webkit.

webkit/tools/test_shell/layout_test_controller.cc

Index: webkit/tools/test_shell/layout_test_controller.cc
===================================================================
--- webkit/tools/test_shell/layout_test_controller.cc	(revision 15017)
+++ webkit/tools/test_shell/layout_test_controller.cc	(working copy)
@@ -9,7 +9,7 @@
 #include "webkit/tools/test_shell/layout_test_controller.h"
 
 #include "base/basictypes.h"
-#include "base/file_util.h"
+#include "base/file_path.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
@@ -596,10 +596,10 @@
   std::string url = args[0].ToString();
   if (StartsWithASCII(url, "/tmp/", true)) {
     // We want a temp file.
-    std::wstring path;
+    FilePath path;
     PathService::Get(base::DIR_TEMP, &path);
-    file_util::AppendToPath(&path, UTF8ToWide(url.substr(5)));
-    result->Set(WideToUTF8(path));
+    path = path.AppendASCII(url.substr(5));
+    result->Set(WideToUTF8(path.ToWStringHack()));
     return;
   }