mus: Add views_mus_interactive_ui_tests target

testing/buildbot/chromium.linux.json

 {
   "Android Arm64 Builder (dbg)": {
     "additional_compile_targets": [
       "gn_all"
     ]
   },
   "Android Builder": {
     "additional_compile_targets": [
       "cronet_test_instrumentation_apk",
       "system_webview_apk"
@@ skipping 1082 matching lines @@
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "url_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "views_mus_interactive_ui_tests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "views_mus_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "views_unittests"
       },
       {
         "swarming": {
@@ skipping 461 matching lines @@
         "name": "nacl_integration",
         "script": "nacl_integration.py"
       }
     ]
   },
   "Linux Tests (dbg)(1)(32)": {
     "gtest_tests": [],
     "scripts": []
   }
 }