Converted Mojo Common Unittests to run as Apptests.

mojo/tools/data/apptests

 # This file contains a list of Mojo apptests. For description of the file
 # format, see `mojo_test` in devtools.
 
 tests = [
   {
     "test": "mojo:asset_bundle_apptests",
   },
   {
     "test": "mojo:authenticating_url_loader_interceptor_apptests",
   },
@@ skipping 30 matching lines @@
   {
     "test": "mojo:log_client_apptests"
   },
   {
     "test": "mojo:log_impl_apptests"
   },
   {
     "test": "mojo:mojio_apptests",
   },
   {
+    "test": "mojo:mojo_common_apptests",
+  },
+  {
     "test": "mojo:moterm_apptests",
   },
   {
     "test": "mojo:network_service_apptests",
   },
   {
     "test": "mojo:prediction_apptests",
   },
   {
     "test": "mojo:ui_apptests",
@@ skipping 82 matching lines @@
       # These tests rely on various things in /bin.
       "test": "mojo:native_support_apptests",
     },
     {
       # https://github.com/domokit/mojo/issues/61
       # Sometime the shell get a trucated application when exposed through the
       # http server.
       "test": "mojo:shell_apptests",
     },
   ]