The runtime namespace needs to be visible since libopenjdk is loaded through dlopen().

Test: Flash and boot
Test: Flash and boot with Runtime APEX enabled (http://r.android.com/q/topic:art-move-libs-to-runtime-apex)
Bug: 113373927
Change-Id: I83232b26942d24dcd97920d8489259b2f701fbbb
diff --git a/build/apex/ld.config.txt b/build/apex/ld.config.txt
index 9e709d8..0a349ac 100644
--- a/build/apex/ld.config.txt
+++ b/build/apex/ld.config.txt
@@ -10,8 +10,11 @@
 [runtime]
 additional.namespaces = platform,conscrypt
 
-# Keep in sync with runtime namespace in /system/etc/ld.config.txt.
+# Keep in sync with the runtime namespace in /system/etc/ld.config.txt.
 namespace.default.isolated = true
+# Visible because some libraries are dlopen'ed, e.g. libopenjdk is dlopen'ed by
+# libart.
+namespace.default.visible = true
 namespace.default.search.paths = /apex/com.android.runtime/${LIB}
 # odex files are in /system/framework. dalvikvm has to be able to dlopen the
 # files for CTS.
@@ -20,7 +23,7 @@
 # TODO(b/119867084): Restrict fallback to platform namespace to PALette library.
 namespace.default.link.platform.allow_all_shared_libs = true
 
-# Keep in sync with default namespace in /system/etc/ld.config.txt.
+# Keep in sync with the default namespace in /system/etc/ld.config.txt.
 namespace.platform.isolated = true
 namespace.platform.search.paths = /system/${LIB}
 namespace.platform.links = default