Update LocaleListTest to accept repeated locales.

Bug: 152410253
Test: atest LocaleListTest
Change-Id: I8aef447f0c584b0a710d7f139710d40723621544
diff --git a/tests/tests/os/src/android/os/cts/LocaleListTest.java b/tests/tests/os/src/android/os/cts/LocaleListTest.java
index 8eee8c6..3d05332 100644
--- a/tests/tests/os/src/android/os/cts/LocaleListTest.java
+++ b/tests/tests/os/src/android/os/cts/LocaleListTest.java
@@ -93,13 +93,9 @@
 
     public void testRepeatedArguments() {
         final Locale[] la = {Locale.US, Locale.US};
-        LocaleList ll = null;
-        try {
-            ll = new LocaleList(la);
-            fail("Initializing a LocaleList with an array containing duplicates should throw.");
-        } catch (Throwable e) {
-            assertEquals(IllegalArgumentException.class, e.getClass());
-        }
+        LocaleList ll = new LocaleList(la);
+        assertEquals(1, ll.size());
+        assertEquals(Locale.US, ll.get(0));
     }
 
     public void testIndexOf() {