[code coverage] Add junit tests on M coverage trybot

Bug: 1008224
Change-Id: I4ce423f92d58c5cc00630abd0479686b2edb6621
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1825795Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Yun Liu <yliuyliu@google.com>
Cr-Commit-Position: refs/heads/master@{#700052}

testing/buildbot/tryserver.chromium.android.json

@@ -6247,6 +6247,146 @@
           "shards": 15
         }
       }
+    ],
+    "junit_tests": [
+      {
+        "isolate_coverage_data": true,
+        "name": "android_webview_junit_tests",
+        "swarming": {},
+        "test": "android_webview_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "base_junit_tests",
+        "swarming": {},
+        "test": "base_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "chrome_junit_tests",
+        "swarming": {},
+        "test": "chrome_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "components_background_task_scheduler_junit_tests",
+        "swarming": {},
+        "test": "components_background_task_scheduler_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "components_gcm_driver_junit_tests",
+        "swarming": {},
+        "test": "components_gcm_driver_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "components_invalidation_impl_junit_tests",
+        "swarming": {},
+        "test": "components_invalidation_impl_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "components_policy_junit_tests",
+        "swarming": {},
+        "test": "components_policy_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "components_signin_junit_tests",
+        "swarming": {},
+        "test": "components_signin_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "components_variations_junit_tests",
+        "swarming": {},
+        "test": "components_variations_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "content_junit_tests",
+        "swarming": {},
+        "test": "content_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "device_junit_tests",
+        "swarming": {},
+        "test": "device_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "junit_unit_tests",
+        "swarming": {},
+        "test": "junit_unit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "keyboard_accessory_junit_tests",
+        "swarming": {},
+        "test": "keyboard_accessory_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "media_base_junit_tests",
+        "swarming": {},
+        "test": "media_base_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "media_router_junit_tests",
+        "swarming": {},
+        "test": "media_router_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "module_installer_junit_tests",
+        "swarming": {},
+        "test": "module_installer_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "net_junit_tests",
+        "swarming": {},
+        "test": "net_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "service_junit_tests",
+        "swarming": {},
+        "test": "service_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "touch_to_fill_junit_tests",
+        "swarming": {},
+        "test": "touch_to_fill_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "ui_junit_tests",
+        "swarming": {},
+        "test": "ui_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "webapk_client_junit_tests",
+        "swarming": {},
+        "test": "webapk_client_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "webapk_shell_apk_h2o_junit_tests",
+        "swarming": {},
+        "test": "webapk_shell_apk_h2o_junit_tests"
+      },
+      {
+        "isolate_coverage_data": true,
+        "name": "webapk_shell_apk_junit_tests",
+        "swarming": {},
+        "test": "webapk_shell_apk_junit_tests"
+      }
     ]
   },
   "android_blink_rel": {

testing/buildbot/waterfalls.pyl

@@ -4420,6 +4420,7 @@
         ],
         'test_suites': {
           'gtest_tests': 'android_lollipop_marshmallow_gtests',
+          'junit_tests': 'chromium_junit_tests',
           'isolated_scripts': 'marshmallow_isolated_scripts',
         },
         'os_type': 'android',