Import intl test suite from v8-i18n project

test/intl/collator/default-locale.js

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-#ifndef V8_EXTENSIONS_I18N_I18N_EXTENSION_H_
-#define V8_EXTENSIONS_I18N_I18N_EXTENSION_H_
+// Constructing Collator with no locale arguments or with []
+// creates one with default locale.
 
-#include "v8.h"
+var collator = new Intl.Collator([]);
 
-namespace v8_i18n {
+var options = collator.resolvedOptions();
 
-class Extension : public v8::Extension {
- public:
-  Extension();
+// Check it's none of these first.
+assertFalse(options.locale === 'und');
+assertFalse(options.locale === '');
+assertFalse(options.locale === undefined);
 
-  virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
-      v8::Handle<v8::String> name);
+// Then check for equality.
+assertEquals(options.locale, getDefaultLocale());
 
-  static void Register();
+var collatorNone = new Intl.Collator();
+assertEquals(options.locale, collatorNone.resolvedOptions().locale);
 
- private:
-  static Extension* extension_;
-};
+// TODO(cira): remove support for {} to mean empty list.
+var collatorBraket = new Intl.Collator({});
+assertEquals(options.locale, collatorBraket.resolvedOptions().locale);
 
-}  // namespace v8_i18n
-
-#endif  // V8_EXTENSIONS_I18N_I18N_EXTENSION_H_
+var collatorWithOptions = new Intl.Collator(undefined, {usage: 'search'});
+assertEquals(getDefaultLocale() + '-u-co-search',
+             collatorWithOptions.resolvedOptions().locale);