Disable a few metalava checks that platform fails after improvements.

Change-Id: Iead8d6a26ba3c75d3612dccc5bebd82c39b5aad8
Tests: none
Bug: 217545629
Bug: 217552813
Bug: 217553717
diff --git a/java/droidstubs.go b/java/droidstubs.go
index 7ad316f..f9dcfd6 100644
--- a/java/droidstubs.go
+++ b/java/droidstubs.go
@@ -334,7 +334,11 @@
 		// TODO(tnorbye): find owners to fix these warnings when annotation was enabled.
 		cmd.FlagWithArg("--hide ", "HiddenTypedefConstant").
 			FlagWithArg("--hide ", "SuperfluousPrefix").
-			FlagWithArg("--hide ", "AnnotationExtraction")
+			FlagWithArg("--hide ", "AnnotationExtraction").
+			// (b/217545629)
+			FlagWithArg("--hide ", "ChangedThrows").
+			// (b/217552813)
+			FlagWithArg("--hide ", "ChangedAbstract")
 	}
 }