Replace base::str[n]casecmp with helper functions.

ui/base/l10n/l10n_util.cc

Index: ui/base/l10n/l10n_util.cc
diff --git a/ui/base/l10n/l10n_util.cc b/ui/base/l10n/l10n_util.cc
index a1695e94f92a97658f8549f6cabab0772dd04bfd..1395cc8bba1ce81787a758e1609e323a9d68d4e3 100644
--- a/ui/base/l10n/l10n_util.cc
+++ b/ui/base/l10n/l10n_util.cc
@@ -205,7 +205,7 @@ bool IsDuplicateName(const std::string& locale_name) {
     return !base::EndsWith(locale_name, "419", true);
 
   for (size_t i = 0; i < arraysize(kDuplicateNames); ++i) {
-    if (base::strcasecmp(kDuplicateNames[i], locale_name.c_str()) == 0)
+    if (base::CompareCaseInsensitiveASCII(kDuplicateNames[i], locale_name))
       return true;
   }
   return false;