Non-SFI mode: Enable nacl_helper_nonsfi_unittests on bots.

testing/buildbot/chromium.webkit.json

 {
   "Linux ChromiumOS Tests (1)": {
     "gtest_tests": [
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "accessibility_unittests"
       },
       {
@@ skipping 108 matching lines @@
       {
         "test": "media_unittests"
       },
       {
         "test": "message_center_unittests"
       },
       {
         "test": "midi_unittests"
       },
       {
+        "test": "nacl_helper_nonsfi_unittests"
+      },
+      {
         "test": "nacl_loader_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "net_unittests"
       },
       {
         "test": "ppapi_unittests"
@@ skipping 158 matching lines @@
       {
         "test": "media_unittests"
       },
       {
         "test": "message_center_unittests"
       },
       {
         "test": "midi_unittests"
       },
       {
+        "test": "nacl_helper_nonsfi_unittests"
+      },
+      {
         "test": "nacl_loader_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "net_unittests"
       },
       {
         "test": "ppapi_unittests"
@@ skipping 706 matching lines @@
         "name": "webkit_lint",
         "script": "webkit_lint.py"
       },
       {
         "name": "webkit_python_tests",
         "script": "webkit_python_tests.py"
       }
     ]
   }
 }