Eliminate InterfaceRegistry

testing/buildbot/chromium.android.json

 {
   "Android Cronet Builder": {
     "additional_compile_targets": [
       "cronet_package"
     ]
   },
   "Android N5X Swarm Builder": {
     "gtest_tests": [
       {
         "merge": {
@@ skipping 791 matching lines @@
                 "=android%2Fswarming%2Flogcats%2F",
                 "${TASK_ID}%2F%2B%2Funified_logcats"
               ],
               "name": "shard #${SHARD_INDEX} logcats"
             }
           ]
         },
         "test": "mojo_common_unittests"
       },
       {
-        "override_isolate_target": "mojo_public_application_unittests",
-        "swarming": {
-          "can_use_on_swarming_builders": true,
-          "cipd_packages": [
-            {
-              "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
-              "location": "bin",
-              "revision": "git_revision:ff387eadf445b24c935f1cf7d6ddd279f8a6b04c"
-            }
-          ],
-          "dimension_sets": [
-            {
-              "android_devices": "4",
-              "device_os": "MMB29Q",
-              "device_type": "bullhead"
-            }
-          ],
-          "hard_timeout": 60,
-          "output_links": [
-            {
-              "link": [
-                "https://luci-logdog.appspot.com/v/?s",
-                "=android%2Fswarming%2Flogcats%2F",
-                "${TASK_ID}%2F%2B%2Funified_logcats"
-              ],
-              "name": "shard #${SHARD_INDEX} logcats"
-            }
-          ]
-        },
-        "test": "mojo_public_application_unittests"
-      },
-      {
         "override_isolate_target": "mojo_public_bindings_unittests",
         "swarming": {
           "can_use_on_swarming_builders": true,
           "cipd_packages": [
             {
               "cipd_package": "infra/tools/luci/logdog/butler/${platform}",
               "location": "bin",
               "revision": "git_revision:ff387eadf445b24c935f1cf7d6ddd279f8a6b04c"
             }
           ],
@@ skipping 3400 matching lines @@
       },
       {
         "test": "chrome_sync_shell_test_apk"
       },
       {
         "test": "content_shell_test_apk"
       }
     ]
   }
 }