convert most webrtc builders to remote_run

masters/master.client.webrtc.fyi/master_mac_cfg.py

Index: masters/master.client.webrtc.fyi/master_mac_cfg.py
diff --git a/masters/master.client.webrtc.fyi/master_mac_cfg.py b/masters/master.client.webrtc.fyi/master_mac_cfg.py
index cdc1e16b6d2ab1c851973f88cedd827b0b1754b2..b3995082955e9e40e12a5a7058ed0a89322b9d51 100644
--- a/masters/master.client.webrtc.fyi/master_mac_cfg.py
+++ b/masters/master.client.webrtc.fyi/master_mac_cfg.py
@@ -4,9 +4,20 @@
 
 from buildbot.schedulers.basic import SingleBranchScheduler
 
-from master.factory import annotator_factory
+from master.factory import remote_run_factory
+
+import master_site_config
+ActiveMaster = master_site_config.WebRTCFYI
+
+
+def m_remote_run(recipe, **kwargs):
+  return remote_run_factory.RemoteRunFactory(
+      active_master=ActiveMaster,
+      repository='https://chromium.googlesource.com/chromium/tools/build.git',
+      recipe=recipe,
+      factory_properties={'path_config': 'kitchen'},
+      **kwargs)
 
-m_annotator = annotator_factory.AnnotatorFactory()
 
 def Update(c):
   c['schedulers'].extend([
@@ -25,8 +36,7 @@ def Update(c):
   c['builders'].extend([
       {
         'name': spec['name'],
-        'factory': m_annotator.BaseFactory(spec.get('recipe',
-                                                    'webrtc/standalone')),
+        'factory': m_remote_run('webrtc/standalone'),
         'notify_on_missing': True,
         'category': 'mac',
         'slavebuilddir': spec['slavebuilddir'],