Merge "Update javadoc for END_OF_DAY event." into rvc-dev am: a4c3cd425b am: cea02e77f0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11815144

Change-Id: I9c999a8d31756a4d7021771960e1c6e2e02c1831

core/java/android/app/usage/UsageEvents.java

@@ -133,6 +133,7 @@ public final class UsageEvents implements Parcelable {
         /**
          * An event type denoting that a component was in the foreground when the stats
          * rolled-over. This is effectively treated as a {@link #ACTIVITY_PAUSED}.
+         * This event has a non-null packageName, and a null className.
          * {@hide}
          */
         public static final int END_OF_DAY = 3;