[PoC] Reformat all BUILD.gn and *.gni files with new gn.

third_party/mojo/src/mojo/edk/system/BUILD.gn

 # Copyright 2014 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("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
@@ skipping 127 matching lines @@
     "//base",
     "//base/third_party/dynamic_annotations",
   ]
 
   allow_circular_includes_from = [ "../embedder" ]
 }
 
 group("tests") {
   testonly = true
   deps = [
+    ":mojo_message_pipe_perftests",
     ":mojo_system_unittests",
-    ":mojo_message_pipe_perftests",
   ]
 }
 
 source_set("test_utils") {
   testonly = true
 
   sources = [
     "test_utils.cc",
     "test_utils.h",
   ]
@@ skipping 80 matching lines @@
     ":system",
     ":test_utils",
     "../test:test_support",
     "//base",
     "//base/test:test_support",
     "//base/test:test_support_perf",
     "//mojo/public/cpp/environment:standalone",
     "//testing/gtest",
   ]
 }