Revert "Revert 231359 "GTTF: make sharding_supervisor.py use --brave-new...""

This reverts commit 94094b6f47c929e5ebaa54eb2627c93e7367399f.

Looks like interactive_ui_tests passed on the next build that didn't have the revert yet.

TBR=maruel

BUG=236893

Review URL: https://codereview.chromium.org/49843003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@231418 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/unit_tests.isolate b/chrome/unit_tests.isolate
index 71bab21..3f077d6 100644
--- a/chrome/unit_tests.isolate
+++ b/chrome/unit_tests.isolate
@@ -41,8 +41,8 @@
         'command': [
           '../testing/xvfb.py',
           '<(PRODUCT_DIR)',
-          '../tools/swarm_client/googletest/run_test_cases.py',
           '<(PRODUCT_DIR)/unit_tests<(EXECUTABLE_SUFFIX)',
+          '--brave-new-test-launcher',
         ],
         'isolate_dependency_tracked': [
           '../testing/xvfb.py',
@@ -86,8 +86,8 @@
       'variables': {
         'command': [
           '../testing/test_env.py',
-          '../tools/swarm_client/googletest/run_test_cases.py',
           '<(PRODUCT_DIR)/unit_tests<(EXECUTABLE_SUFFIX)',
+          '--brave-new-test-launcher',
         ],
         'isolate_dependency_untracked': [
           '<(PRODUCT_DIR)/test_data/chrome/browser/resources/google_now/',