Merge "Add instructions on how to annotate an AIDL interface" am: b6df9fb2e8

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1912992

Change-Id: Ibb49b112a88bbd866b5fd32be86a0961fbfa4531

errorprone/java/com/google/errorprone/bugpatterns/android/RequiresPermissionChecker.java

@@ -187,7 +187,10 @@ public final class RequiresPermissionChecker extends BugChecker
         if (!actualPerm.containsAll(expectedPerm)) {
             return buildDescription(tree)
                     .setMessage("Method " + method.name.toString() + "() annotated " + expectedPerm
-                            + " but too wide; only invokes methods requiring " + actualPerm)
+                            + " but too wide; only invokes methods requiring " + actualPerm
+                            + "\n  If calling an AIDL interface, it can be annotated by adding:"
+                            + "\n  @JavaPassthrough(annotation=\""
+                            + "@android.annotation.RequiresPermission(...)\")")
                     .build();
         }