Limit visibility of ART libraries, binaries, and headers.

This simply records the visibilities necessary to keep things working - more
work is required to vet them.

Test: m
Bug: 133140750
Change-Id: I776d6b79c4c2b214556070c850ae5321d5f8b949
diff --git a/openjdkjvm/Android.bp b/openjdkjvm/Android.bp
index 907315e..a5350f9 100644
--- a/openjdkjvm/Android.bp
+++ b/openjdkjvm/Android.bp
@@ -16,6 +16,7 @@
 cc_defaults {
     name: "libopenjdkjvm_defaults",
     defaults: ["art_defaults"],
+    visibility: ["//libcore"],
     host_supported: true,
     srcs: ["OpenjdkJvm.cc"],
     shared_libs: [