Fix cts test

Test: btest a.d.c.AppUsageObserverTest

Fixes: 294206051

Change-Id: Ic07a12f93cbe7ca1b0a428456f6608fd1055e4ab
diff --git a/tests/devicepolicy/src/android/devicepolicy/cts/AppUsageObserverTest.java b/tests/devicepolicy/src/android/devicepolicy/cts/AppUsageObserverTest.java
index 3e43304..d3eb3e5 100644
--- a/tests/devicepolicy/src/android/devicepolicy/cts/AppUsageObserverTest.java
+++ b/tests/devicepolicy/src/android/devicepolicy/cts/AppUsageObserverTest.java
@@ -98,14 +98,14 @@
     @Test
     @ApiTest(apis = "android.app.usage.UsageStatsManager#registerAppUsageObserver")
     @Postsubmit(reason = "new test")
-    public void registerAppUsageObserver_supersedesObserversLimit_throwsException() {
+    public void registerAppUsageObserver_exceedsObserversLimit_throwsException() {
         try {
             for (int observerId = 0; observerId < OBSERVER_LIMIT; observerId++) {
                 sUsageStatsManager.registerAppUsageObserver(
                         observerId, sPackages, 60, TimeUnit.SECONDS, sPendingIntent);
             }
 
-            assertThrows(IllegalArgumentException.class,
+            assertThrows(IllegalStateException.class,
                     () -> sUsageStatsManager.registerAppUsageObserver(
                             OBSERVER_LIMIT, sPackages, 60, TimeUnit.SECONDS,
                             sPendingIntent));
@@ -120,7 +120,7 @@
     @Test
     @ApiTest(apis = "android.app.usage.UsageStatsManager#registerUsageSessionObserver")
     @Postsubmit(reason = "new test")
-    public void registerUsageSessionObserver_supersedesObserversLimit_throwsException() {
+    public void registerUsageSessionObserver_exceedsObserversLimit_throwsException() {
         try {
             for (int observerId = 0; observerId < OBSERVER_LIMIT; observerId++) {
                 sUsageStatsManager.registerUsageSessionObserver(