Pull string_util for posix too

base/strings/string_util_posix.h

Index: base/strings/string_util_posix.h
diff --git a/base/strings/string_util_posix.h b/base/strings/string_util_posix.h
index 3ca72dd74fd8801fc4f6bd1d5a6a69febefd894b..2a922ecb16dbe0d48ad0d0d074f5c88bf855a673 100644
--- a/base/strings/string_util_posix.h
+++ b/base/strings/string_util_posix.h
@@ -17,6 +17,20 @@ inline int vsnprintf(char* buffer,
   return ::vsnprintf(buffer, size, format, arguments);
 }
 
+// Chromium code style is to not use malloc'd strings; this is only for use
+// for interaction with APIs that require it.
+inline char* strdup(const char* str) {
+  return ::strdup(str);
+}
+
+inline int strcasecmp(const char* string1, const char* string2) {
+  return ::strcasecmp(string1, string2);
+}
+
+inline int strncasecmp(const char* string1, const char* string2, size_t count) {
+  return ::strncasecmp(string1, string2, count);
+}
+
 }  // namespace base
 
 #endif  // MINI_CHROMIUM_BASE_STRINGS_STRING_UTIL_POSIX_H_