Deprecate RS Java APIs.

This CL marks RenderScript Java APIs as deprecated.

Bug: 168711199
Test: m
Test: CtsRenderscriptTestCases
Test: CtsRsCppTestCases
Test: CtsRsBlasTestCases
Change-Id: Id271a794679d445c480d62c87ae6c8150f6901f8
diff --git a/rs/java/android/renderscript/AllocationAdapter.java b/rs/java/android/renderscript/AllocationAdapter.java
index 6d7e97e..17bc234 100644
--- a/rs/java/android/renderscript/AllocationAdapter.java
+++ b/rs/java/android/renderscript/AllocationAdapter.java
@@ -19,7 +19,11 @@
 /**
  * Only intended for use by generated reflected code.
  *
+ * @deprecated Renderscript has been deprecated in API level 31. Please refer to the <a
+ * href="https://developer.android.com/guide/topics/renderscript/migration-guide">migration
+ * guide</a> for the proposed alternatives.
  **/
+@Deprecated
 public class AllocationAdapter extends Allocation {
     Type mWindow;