Revert 283610 "Revert 283562 "Mojo: Enable mojo_shell_tests on W..."

Should be okay now, according to my local testing (see crbug.com/389666,
etc.; crrev.com/285139 also fixed a use-after-free that would be picked
up by this test on Debug builds).

> Revert 283562 "Mojo: Enable mojo_shell_tests on Windows (on the ..."
>
> Blech: Stuff fails. Shockingly.
> http://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%28dbg%29%284%29/builds/27268/steps/mojo_shell_tests/logs/stdio
>
> > Mojo: Enable mojo_shell_tests on Windows (on the bots).
> >
> > R=sky@chromium.org
> >
> > Review URL: https://codereview.chromium.org/398023002
>
> TBR=viettrungluu@chromium.org
>
> Review URL: https://codereview.chromium.org/398253002

TBR=viettrungluu@chromium.org, sky@chromium.org

Review URL: https://codereview.chromium.org/413263002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285430 0039d316-1c4b-4281-b951-d872f2087c98

testing/buildbot/chromium.win.json

@@ -109,6 +109,7 @@
       "mojo_public_system_unittests",
       "mojo_public_utility_unittests",
       "mojo_service_manager_unittests",
+      "mojo_shell_tests",
       "mojo_system_unittests",
       "mojo_view_manager_unittests",
       "sync_unit_tests",
@@ -176,6 +177,7 @@
       "mojo_public_system_unittests",
       "mojo_public_utility_unittests",
       "mojo_service_manager_unittests",
+      "mojo_shell_tests",
       "mojo_system_unittests",
       "mojo_view_manager_unittests",
       "sync_unit_tests",
@@ -240,6 +242,7 @@
       "mojo_public_system_unittests",
       "mojo_public_utility_unittests",
       "mojo_service_manager_unittests",
+      "mojo_shell_tests",
       "mojo_system_unittests",
       "mojo_view_manager_unittests",
       "sync_unit_tests",
@@ -308,6 +311,7 @@
       "mojo_public_system_unittests",
       "mojo_public_utility_unittests",
       "mojo_service_manager_unittests",
+      "mojo_shell_tests",
       "mojo_system_unittests",
       "mojo_view_manager_unittests",
       {"test": "browser_tests", "shard_index": 2, "total_shards": 5}