Deprecate more old filepath functions.

chrome/browser/tab_contents/navigation_controller.cc

Index: chrome/browser/tab_contents/navigation_controller.cc
diff --git a/chrome/browser/tab_contents/navigation_controller.cc b/chrome/browser/tab_contents/navigation_controller.cc
index 6efd34351909ba0ff62c9ee8836387e522bb1e28..5b0e157bbbaec1425aa8b7bd03c3ff361aafd747 100644
--- a/chrome/browser/tab_contents/navigation_controller.cc
+++ b/chrome/browser/tab_contents/navigation_controller.cc
@@ -255,10 +255,15 @@ NavigationEntry* NavigationController::CreateNavigationEntry(
   entry->set_user_typed_url(url);
   entry->set_update_virtual_url_with_url(reverse_on_redirect);
   if (url.SchemeIsFile()) {
+    // Use the filename as the title, not the full path.
+    // We need to call FormatUrl() to perform URL de-escaping;
+    // it's a bit ugly to grab the filename out of the resulting string.
     std::wstring languages = UTF8ToWide(profile->GetPrefs()->GetString(
         prefs::kAcceptLanguages));
-    entry->set_title(WideToUTF16Hack(
-        file_util::GetFilenameFromPath(net::FormatUrl(url, languages))));
+    std::wstring formatted = net::FormatUrl(url, languages);
+    std::wstring filename =
+        FilePath::FromWStringHack(formatted).BaseName().ToWStringHack();
+    entry->set_title(WideToUTF16Hack(filename));
   }
   return entry;
 }