convert most webrtc builders to remote_run

masters/master.tryserver.webrtc/master.cfg

Index: masters/master.tryserver.webrtc/master.cfg
diff --git a/masters/master.tryserver.webrtc/master.cfg b/masters/master.tryserver.webrtc/master.cfg
index d78d2d683a3d148afa6420ac9d066222c30c0ee0..385060c348b28668c12728470adf27667d6f8587 100755
--- a/masters/master.tryserver.webrtc/master.cfg
+++ b/masters/master.tryserver.webrtc/master.cfg
@@ -14,6 +14,7 @@ from master import master_utils
 from master import slaves_list
 from master.builders_pools import BuildersPools
 from master.factory import annotator_factory
+from master.factory import remote_run_factory
 from master.try_job_http import TryJobHTTP
 from master.try_mail_notifier import TryMailNotifier
 
@@ -119,19 +120,27 @@ specs = [
   {'name': 'android_gn_rel', 'slavebuilddir': 'android_gn'},
 ]
 
-m_annotator = annotator_factory.AnnotatorFactory()
+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)
+
 c['builders'] = [
     {
       'name': spec['name'],
       # TODO(sergiyb): Remove the timeout below after all bots have synched past
       # Blink merge commit.
-      'factory': m_annotator.BaseFactory(spec.get('recipe',
-                                                  'webrtc/standalone'),
-                                         timeout=3600),
+      'factory': m_remote_run(spec.get('recipe', 'webrtc/standalone'),
+                              timeout=3600),
       'slavebuilddir': spec['slavebuilddir'],
     } for spec in specs
 ]
 
+m_annotator = annotator_factory.AnnotatorFactory()
+
 # Presubmit builder.
 c['builders'].append(
   {