WebRTC: Cleanup symlinks before bot_update

scripts/slave/recipe_modules/webrtc/api.py

Index: scripts/slave/recipe_modules/webrtc/api.py
diff --git a/scripts/slave/recipe_modules/webrtc/api.py b/scripts/slave/recipe_modules/webrtc/api.py
index a5094ca2b35a424039ad9dbaef03efac9d63b9de..57e813276eb902c1fd3c83fb337eade0d63a0923 100644
--- a/scripts/slave/recipe_modules/webrtc/api.py
+++ b/scripts/slave/recipe_modules/webrtc/api.py
@@ -179,6 +179,14 @@ class WebRTCApi(recipe_api.RecipeApi):
     if self._working_dir:
       kwargs.setdefault('cwd', self._working_dir)
 
+    # TODO(kjellander): Deploy at all bots once verified working.
+    if self.mastername == 'client.webrtc.fyi':
+      # Cleanup symlinks if there are any created.
+      self.m.python('clean symlinks',
+                    script=self.resource('cleanup_symlinks.py'),
+                    args=[self._working_dir],
+                    infra_step=True)
+
     update_step = self.m.bot_update.ensure_checkout(**kwargs)
     assert update_step.json.output['did_run']