mojo: Add isolate test for python bindings test

mojo/mojo.gyp

 # Copyright 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.
 
 {
   'target_defaults': {
     'conditions': [
       ['mojo_shell_debug_url != ""', {
         'defines': [
           'MOJO_SHELL_DEBUG=1',
@@ skipping 601 matching lines @@
           ],
           'dependencies': [
             'mojo_python_bindings',
             'mojo_python_embedder',
             'mojo_python_system',
           ],
           'includes': [ '../third_party/cython/python_module.gypi' ],
         },
       ],
     }],
+    ['component!="shared_library" and OS=="linux" and test_isolation_mode!="noop"', {
+      'targets': [
+        {
+          'target_name': 'mojo_python_unittests_run',
+          'type': 'none',
+          'dependencies': [
+            'mojo_python',
+            'mojo_base.gyp:mojo_public_test_interfaces',
+          ],
+          'includes': [
+            '../build/isolate.gypi',
+            'mojo_python_unittests.isolate',
+          ],
+          'sources': [
+            'mojo_python_unittests.isolate',
+          ],
+        },
+      ],
+    }],
   ],
 }