Split mojo/public/cpp/system/tests/core_unittest.cc, part 2 (of 2, apparently).

mojo/nacl/BUILD.gn

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//mojo/public/mojo_sdk.gni")
+
 # Untrusted code
 if (is_nacl) {
-  # Unit test for the Mojo public API.
+  # Unit test for the Mojo public C API.
+  # TODO(vtl): Should also have a test for the C++ API?
   executable("monacl_test") {
     testonly = true
-    sources = [
-      "//mojo/public/cpp/system/tests/core_unittest.cc",
-      "//mojo/public/cpp/system/tests/macros_unittest.cc",
-    ]
+    sources = []
     deps = [
-      "//mojo/public/c/system/tests:tests",
-      "//mojo/public/cpp/system:system",
+      "//mojo/public/c/system/tests",
       "//mojo/public/platform/nacl:mojo",
-      "//testing/gtest:gtest",
+      "//testing/gtest",
       "//testing/gtest:gtest_main",
     ]
   }
 
   group("mojo_nacl_tests_untrusted") {
     testonly = true
     deps = [
       ":monacl_test",
       "//examples/apptest",
       "//examples/wget",
       "//services/clipboard",
       "//services/clipboard:apptests",
       "//services/files:apptests",
       "//services/http_server",
       "//services/http_server:apptests",
       "//shell:apptests",
     ]
   }
 }