Add utf_string_conversions to base namespace.

chrome/browser/sync/test/integration/two_client_autofill_sync_test.cc

Index: chrome/browser/sync/test/integration/two_client_autofill_sync_test.cc
diff --git a/chrome/browser/sync/test/integration/two_client_autofill_sync_test.cc b/chrome/browser/sync/test/integration/two_client_autofill_sync_test.cc
index 1400646346adb390b05e2784978041c4b2df1476..2b6d734a8c473ce80788f12dc2c0501f0667929c 100644
--- a/chrome/browser/sync/test/integration/two_client_autofill_sync_test.cc
+++ b/chrome/browser/sync/test/integration/two_client_autofill_sync_test.cc
@@ -104,8 +104,8 @@ IN_PROC_BROWSER_TEST_F(TwoClientAutofillSyncTest, AddUnicodeProfile) {
   ASSERT_TRUE(SetupClients()) << "SetupClients() failed.";
 
   std::set<AutofillKey> keys;
-  keys.insert(AutofillKey(WideToUTF16(L"Sigur R\u00F3s"),
-                          WideToUTF16(L"\u00C1g\u00E6tis byrjun")));
+  keys.insert(AutofillKey(base::WideToUTF16(L"Sigur R\u00F3s"),
+                          base::WideToUTF16(L"\u00C1g\u00E6tis byrjun")));
   AddKeys(0, keys);
   ASSERT_TRUE(SetupSync()) << "SetupSync() failed.";
   ASSERT_TRUE(AwaitQuiescence());