Add @UnsupportedAppUsage annotations

For packages:
  android.widget

This is an automatically generated CL. See go/UnsupportedAppUsage
for more details.

Exempted-From-Owner-Approval: Mechanical changes to the codebase
which have been approved by Android API council and announced on
android-eng@

Bug: 110868826
Test: m
Change-Id: Idf7ccc7a850fa984ea16f91cdd70159087274e5c
Merged-In: Ic61019b1df85448a158fc2ba55c326353222c6b9
diff --git a/core/java/android/widget/DateTimeView.java b/core/java/android/widget/DateTimeView.java
index 2b1e900..bf2762a 100644
--- a/core/java/android/widget/DateTimeView.java
+++ b/core/java/android/widget/DateTimeView.java
@@ -22,6 +22,7 @@
 import static android.text.format.DateUtils.YEAR_IN_MILLIS;
 import static android.text.format.Time.getJulianDay;
 
+import android.annotation.UnsupportedAppUsage;
 import android.app.ActivityThread;
 import android.content.BroadcastReceiver;
 import android.content.Context;
@@ -76,6 +77,7 @@
         this(context, null);
     }
 
+    @UnsupportedAppUsage
     public DateTimeView(Context context, AttributeSet attrs) {
         super(context, attrs);
         final TypedArray a = context.obtainStyledAttributes(attrs,
@@ -124,6 +126,7 @@
     }
 
     @android.view.RemotableViewMethod
+    @UnsupportedAppUsage
     public void setTime(long time) {
         Time t = new Time();
         t.set(time);
@@ -149,6 +152,7 @@
         }
     }
 
+    @UnsupportedAppUsage
     void update() {
         if (mTime == null || getVisibility() == GONE) {
             return;