Move gn _run target generation into test().

BUILD.gn

 # Copyright (c) 2013 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.
 
 # This is the root build file for GN. GN will start processing by loading this
 # file, and recursively load all dependencies until all dependencies are either
 # resolved or known not to exist (which will cause the build to fail). So if
 # you add a new build file, there must be some path of dependencies from this
 # file to your new one or GN won't know about it.
 
@@ skipping 444 matching lines @@
       deps += [ "//extensions/shell:app_shell" ]
     }
 
     if (enable_nacl) {
       deps += [ "//components/nacl/loader:nacl_loader_unittests" ]
 
       if (is_linux) {
         # TODO(dpranke): Figure out what platforms should actually have this.
         deps += [
           "//components/nacl/loader:helper_nonsfi",
-          "//components/nacl/loader:helper_nonsfi_unittests",
           "//components/nacl/loader:nacl_helper",
+          "//components/nacl/loader:nacl_helper_nonsfi_unittests",
         ]
       }
     }
 
     if (media_use_ffmpeg && !is_android) {
       deps += [ "//media:ffmpeg_regression_tests" ]
     }
 
     if (use_ash) {
       deps += [
@@ skipping 413 matching lines @@
       ]
 
       if (target_cpu == "x86") {
         deps += [ "//chrome/tools/crash_service:crash_service_win64" ]
       }
     } else {
       deps += [ "//breakpad:minidump_stackwalk($host_toolchain)" ]
     }
   }
 }