Import intl test suite from v8-i18n project

test/intl/number-format/resolved-options-is-method.js

 // Copyright 2013 the V8 project authors. All rights reserved.
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-// ECMAScript 402 API implementation is broken into separate files for
-// each service. The build system combines them together into one
-// Intl namespace.
+// Test that resolvedOptions is a method, not a property getter and that
+// the result is mutable.
 
-/**
- * Intl object is a single object that has some named properties,
- * all of which are constructors.
- */
-var Intl = (function() {
+var nf = new Intl.NumberFormat();
 
-'use strict';
+var result = nf.resolvedOptions();
 
-var Intl = {};
+assertTrue(result instanceof Object);
+
+// Result should be mutable.
+result.locale = 'xx';
+
+assertEquals(result.locale, 'xx');