Only run mojo_{shell,application_manager,view_manager}_unittests on linux

testing/buildbot/chromium.win.json

Index: testing/buildbot/chromium.win.json
diff --git a/testing/buildbot/chromium.win.json b/testing/buildbot/chromium.win.json
index e84d08b713a314592bb4d7f9b6c70123ad6b9813..835e89e18bd9947194709c807dc64a39397a8d51 100644
--- a/testing/buildbot/chromium.win.json
+++ b/testing/buildbot/chromium.win.json
@@ -110,10 +110,7 @@
       "mojo_public_environment_unittests",
       "mojo_public_system_unittests",
       "mojo_public_utility_unittests",
-      "mojo_application_manager_unittests",
-      "mojo_shell_tests",
       "mojo_system_unittests",
-      "mojo_view_manager_unittests",
       "sync_unit_tests",
       "unit_tests",
       "sql_unittests",
@@ -179,10 +176,7 @@
       "mojo_public_environment_unittests",
       "mojo_public_system_unittests",
       "mojo_public_utility_unittests",
-      "mojo_application_manager_unittests",
-      "mojo_shell_tests",
       "mojo_system_unittests",
-      "mojo_view_manager_unittests",
       "sync_unit_tests",
       "unit_tests",
       "sql_unittests",
@@ -245,10 +239,7 @@
       "mojo_public_environment_unittests",
       "mojo_public_system_unittests",
       "mojo_public_utility_unittests",
-      "mojo_application_manager_unittests",
-      "mojo_shell_tests",
       "mojo_system_unittests",
-      "mojo_view_manager_unittests",
       "sync_unit_tests",
       "unit_tests",
       "sql_unittests",
@@ -315,10 +306,7 @@
       "mojo_public_environment_unittests",
       "mojo_public_system_unittests",
       "mojo_public_utility_unittests",
-      "mojo_application_manager_unittests",
-      "mojo_shell_tests",
       "mojo_system_unittests",
-      "mojo_view_manager_unittests",
       {"test": "browser_tests", "shard_index": 2, "total_shards": 5}
     ]
   },