Put chromoting isolate targets under chromoting_swarm_tests=1 GYP variable.

chrome/test/media_router/e2e_tests.gyp

Index: chrome/test/media_router/e2e_tests.gyp
diff --git a/chrome/test/media_router/e2e_tests.gyp b/chrome/test/media_router/e2e_tests.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..56aad733b32e7bd0c2d122cb9d6b07c4c7d8ff3d
--- /dev/null
+++ b/chrome/test/media_router/e2e_tests.gyp
@@ -0,0 +1,25 @@
+# Copyright (c) 2015 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.
+
+{
+  'conditions': [
+    ['archive_media_router_tests==1', {
+      'targets': [
+        {
+          'target_name': 'media_router_e2e_tests_run',
+          'type': 'none',
+          'dependencies': [
+            '../../chrome.gyp:browser_tests',
+          ],
+          'includes': [
+            '../../../build/isolate.gypi',
+          ],
+          'sources': [
+            'media_router_tests.isolate',
+          ],
+        },  # target_name: 'media_router_e2e_tests_run'
+      ],
+    }],
+  ],
+}