Adding publicAlternatives to UnsupportedAppUsage on Choreographer

Adding back the UnsupportedAppUsage annotation together with
publicAlternatives according to
https://googleplex-android-review.git.corp.google.com/c/platform/frameworks/base/+/12517216/11/core/java/android/view/DisplayEventReceiver.java#158

Test: build
Bug: 162890382
Bug: 162888881
Bug: 162890407
Change-Id: I7b895978ec61290c5320ccb2472b0bf1addc914b

core/java/android/view/Choreographer.java

@@ -660,6 +660,8 @@ public final class Choreographer {
         ThreadedRenderer.setFPSDivisor(divisor);
     }
 
+    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, publicAlternatives = "Use {@link "
+            + "#postFrameCallback} instead")
     void doFrame(long frameTimeNanos, int frame, long frameTimelineVsyncId) {
         final long startNanos;
         synchronized (mLock) {

core/java/android/view/DisplayEventReceiver.java

@@ -17,6 +17,7 @@
 package android.view;
 
 import android.compat.annotation.UnsupportedAppUsage;
+import android.os.Build;
 import android.os.Looper;
 import android.os.MessageQueue;
 import android.util.Log;
@@ -157,6 +158,8 @@ public abstract class DisplayEventReceiver {
      * @param frameTimelineVsyncId The frame timeline vsync id, used to correlate a frame
      * produced by HWUI with the timeline data stored in Surface Flinger.
      */
+    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, publicAlternatives = "Use {@link "
+            + "Choreographer#postFrameCallback} instead")
     public void onVsync(long timestampNanos, long physicalDisplayId, int frame,
             long frameTimelineVsyncId) {
     }
@@ -200,6 +203,8 @@ public abstract class DisplayEventReceiver {
 
     // Called from native code.
     @SuppressWarnings("unused")
+    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.R, publicAlternatives = "Use {@link "
+            + "Choreographer#postFrameCallback} instead")
     private void dispatchVsync(long timestampNanos, long physicalDisplayId, int frame,
             long frameTimelineVsyncId) {
         onVsync(timestampNanos, physicalDisplayId, frame, frameTimelineVsyncId);