ART: Native bridge command-line parameter

Add a command-line parameter for the native bridge library, slight
refactor/cleanup.

Add run-test 115 to test the native bridge interface. Currently the
tests are black-listed for the target, as the setup for the test
is too complicated in the current infrastructure.

Change-Id: I6ccf19485e8c30b96e9f2fd5425278cb1ebd403f
diff --git a/runtime/parsed_options.h b/runtime/parsed_options.h
index 29d5494..668ed9e 100644
--- a/runtime/parsed_options.h
+++ b/runtime/parsed_options.h
@@ -45,6 +45,7 @@
   std::string image_;
   bool check_jni_;
   std::string jni_trace_;
+  std::string native_bridge_library_string_;
   CompilerCallbacks* compiler_callbacks_;
   bool is_zygote_;
   // TODO Change this to true when we want it on by default.