Do not use \u unicode characters directly in libaddressinput unit tests.

third_party/libaddressinput/chromium/chrome_address_validator_unittest.cc

Index: third_party/libaddressinput/chromium/chrome_address_validator_unittest.cc
diff --git a/third_party/libaddressinput/chromium/chrome_address_validator_unittest.cc b/third_party/libaddressinput/chromium/chrome_address_validator_unittest.cc
index f72cbd988ee7b81d058c6110c4956442e668a868..63353fec3c8f430397e296a45da82a54dddc226b 100644
--- a/third_party/libaddressinput/chromium/chrome_address_validator_unittest.cc
+++ b/third_party/libaddressinput/chromium/chrome_address_validator_unittest.cc
@@ -10,6 +10,7 @@
 
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
+#include "base/strings/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/libaddressinput/src/cpp/include/libaddressinput/address_data.h"
 #include "third_party/libaddressinput/src/cpp/include/libaddressinput/address_problem.h"
@@ -247,7 +248,7 @@ TEST_F(AddressValidatorTest, BasicValidation) {
   EXPECT_TRUE(problems.empty());
 
   // Ignore diacriticals.
-  address.administrative_area = "T\u00E9xas";
+  address.administrative_area = base::WideToUTF8(L"T\u00E9xas");
   problems.clear();
   EXPECT_EQ(AddressValidator::SUCCESS,
             validator_->ValidateAddress(address, NULL, &problems));