Fix recipes for Gerrit property rename

infra/bots/recipe_modules/vars/api.py

Index: infra/bots/recipe_modules/vars/api.py
diff --git a/infra/bots/recipe_modules/vars/api.py b/infra/bots/recipe_modules/vars/api.py
index 85e592151a4ee58f836d528afcd1a23a857d08aa..eea6e36c9b4543fc4a3a49e4a6977e4a5ceb7868 100644
--- a/infra/bots/recipe_modules/vars/api.py
+++ b/infra/bots/recipe_modules/vars/api.py
@@ -120,17 +120,17 @@ class SkiaVarsApi(recipe_api.RecipeApi):
         self.is_trybot = True
         self.issue = self.m.properties['issue']
         self.patchset = self.m.properties['patchset']
-      elif (self.m.properties.get('event.change.number', '') and
-            self.m.properties.get('event.patchSet.ref', '')):
+      elif (self.m.properties.get('patch_issue', '') and
+            self.m.properties.get('patch_ref', '')):
         self.is_trybot = True
-        self.issue = self.m.properties['event.change.number']
-        self.patchset = self.m.properties['event.patchSet.ref'].split('/')[-1]
+        self.issue = self.m.properties['patch_issue']
+        self.patchset = self.m.properties['patch_ref'].split('/')[-1]
     else:
       self.is_trybot = self.builder_cfg['is_trybot']
       if self.is_trybot:
         if self.patch_storage == 'gerrit':
-          self.issue = self.m.properties['event.change.number']
-          self.patchset = self.m.properties['event.patchSet.ref'].split('/')[-1]
+          self.issue = self.m.properties['patch_issue']
+          self.patchset = self.m.properties['patch_ref'].split('/')[-1]
         else:
           self.issue = self.m.properties['issue']
           self.patchset = self.m.properties['patchset']