Address API review comments for registerReceiver

Bug: 37465538
Test: manual; Verified that Instant Apps can send broadcasts to
receivers still via the changed API.

Change-Id: Ib0f3d0c8ee71234288ccecd07e621554eb9b70ac
diff --git a/test-runner/src/android/test/mock/MockContext.java b/test-runner/src/android/test/mock/MockContext.java
index b4e3a47..bfc2d72 100644
--- a/test-runner/src/android/test/mock/MockContext.java
+++ b/test-runner/src/android/test/mock/MockContext.java
@@ -492,7 +492,7 @@
 
     @Override
     public Intent registerReceiver(BroadcastReceiver receiver, IntentFilter filter,
-            boolean visibleToInstantApps) {
+            int flags) {
         throw new UnsupportedOperationException();
     }
 
@@ -504,7 +504,7 @@
 
     @Override
     public Intent registerReceiver(BroadcastReceiver receiver, IntentFilter filter,
-            String broadcastPermission, Handler scheduler, boolean visibleToInstantApps) {
+            String broadcastPermission, Handler scheduler, int flags) {
         throw new UnsupportedOperationException();
     }