swarming: wholesale switch remaining tests to run on Swarming.

testing/buildbot/manage.py

Index: testing/buildbot/manage.py
diff --git a/testing/buildbot/manage.py b/testing/buildbot/manage.py
index 2f6e1992398b72cda1d27b2a9f2a3a6c5874cec4..678d70c33c2560ee88759b26855bcd3d3ba668b1 100755
--- a/testing/buildbot/manage.py
+++ b/testing/buildbot/manage.py
@@ -143,6 +143,7 @@ SKIP_GN_ISOLATE_MAP_TARGETS = {
 
   # TODO(kbr): teach this script about isolated_scripts tests.
   # crbug.com/620531
+  'mash_browser_tests',
   'telemetry_gpu_integration_test',
   'telemetry_gpu_test',
   'telemetry_gpu_unittests',
@@ -238,6 +239,8 @@ def process_file(mode, test_name, tests_location, filepath, ninja_targets,
         raise Error('%s: %s / %s is listed multiple times.' %
                     (filename, builder, name))
       seen.add(name)
+      d.setdefault('swarming', {}).setdefault(
+          'can_use_on_swarming_builders', True)
 
     config[builder]['gtest_tests'] = sorted(
         data['gtest_tests'], key=lambda x: x['test'])