Add kotlin branch builder

Change-Id: I59eea296dc31119e0d7522aa087164c3d48c2c40

infra/config/global/cr-buildbucket.cfg

diff --git a/infra/config/global/cr-buildbucket.cfg b/infra/config/global/cr-buildbucket.cfg
index c0222e8..20033dc 100644
--- a/infra/config/global/cr-buildbucket.cfg
+++ b/infra/config/global/cr-buildbucket.cfg
@@ -448,5 +448,15 @@
         properties: "tool:r8"
       }
     }
+    builders {
+      name: "kotlin-builder"
+      mixins: "linux"
+      mixins: "normal"
+      recipe {
+        properties_j: "test_options:[\"--not_used\"]"
+        properties: "test_wrapper:google-scripts/build.py"
+        properties: "kotlin_repo:True"
+      }
+    }
   }
 }

infra/config/global/luci-scheduler.cfg

diff --git a/infra/config/global/luci-scheduler.cfg b/infra/config/global/luci-scheduler.cfg
index a0b3fa3..c5bb86e 100644
--- a/infra/config/global/luci-scheduler.cfg
+++ b/infra/config/global/luci-scheduler.cfg
@@ -58,6 +58,16 @@
 }
 
 trigger {
+  id: "kotlin_trigger"
+  acl_sets: "default"
+  gitiles: {
+    repo: "https://github.googlesource.com/google/kotlin"
+    refs: "refs/heads/google-ir"
+  }
+  triggers: "kotlin-builder"
+}
+
+trigger {
   id: "branch-gitiles-trigger"
   acl_sets: "default"
   gitiles: {
@@ -128,6 +138,19 @@
 }
 
 job {
+  id: "kotlin-builder"
+  acl_sets: "default"
+  triggering_policy: {
+    max_concurrent_invocations: 1
+  }
+  buildbucket {
+    server: "cr-buildbucket.appspot.com"
+    bucket: "luci.r8.ci"
+    builder: "kotlin-builder"
+  }
+}
+
+job {
   id: "linux"
   acl_sets: "default"
   triggering_policy: {