Switch on use_new_wrapper_types mode for content/common.

base/strings/string_util.h

Index: base/strings/string_util.h
diff --git a/base/strings/string_util.h b/base/strings/string_util.h
index 31c900362d57557e10edcc73e072a5647e0e8853..6ea45fa70cc52fd16709bf96e1eeba5115220128 100644
--- a/base/strings/string_util.h
+++ b/base/strings/string_util.h
@@ -456,6 +456,12 @@ BASE_EXPORT string16 ReplaceStringPlaceholders(const string16& format_string,
                                                const string16& a,
                                                size_t* offset);
 
+BASE_EXPORT extern string16 Uint8VectorToString16(
+    const std::vector<uint8_t>& input);
+
+BASE_EXPORT extern std::vector<uint8_t> String16ToUint8Vector(
+    const string16& input);
+
 }  // namespace base
 
 #if defined(OS_WIN)