luci: configure a version of mac_upload_clang on cr-buildbucket-dev.

Bug: 731375
Change-Id: I3f7b54c83d4faaa5209b89e15e1d6c5c0cb7443e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1636973
Commit-Queue: John Budorick <jbudorick@chromium.org>
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Auto-Submit: John Budorick <jbudorick@chromium.org>
Reviewed-by: Ben Pastene <bpastene@chromium.org>
Cr-Commit-Position: refs/heads/master@{#664772}

infra/config/cr-buildbucket-dev.cfg

@@ -19,6 +19,35 @@ acl_sets {
   }
 }
 
+acl_sets {
+  name: "tryserver"
+  acls {
+    role: READER
+    group: "all"
+  }
+  acls {
+    role: SCHEDULER
+    group: "project-chromium-tryjob-access"
+  }
+  acls {
+    role: SCHEDULER
+    group: "service-account-cq"
+  }
+  acls {
+    role: SCHEDULER
+    identity: "findit-for-me@appspot.gserviceaccount.com"
+  }
+  acls {
+    role: WRITER
+    group: "service-account-chromium-tryserver"
+  }
+  acls {
+    # Allow luci-migration to bump next build number.
+    role: WRITER
+    identity: "luci-migration@appspot.gserviceaccount.com"
+  }
+}
+
 builder_mixins {
   name: "swarm-ci"
   dimensions: "cpu:x86-64"
@@ -28,6 +57,21 @@ builder_mixins {
   }
 }
 
+builder_mixins {
+  name: "xcode-mac-9a235"
+  caches: {
+    name: "xcode_mac_9a235"
+    path: "xcode_mac_9a235.app"
+  }
+  recipe {
+    properties_j: <<END
+    $depot_tools/osx_sdk: {
+      "sdk_version": "9a235"
+    }
+    END
+  }
+}
+
 buckets {
   name: "luci.chromium.ci"
 
@@ -124,3 +168,44 @@ buckets {
       }
     }
 }
+
+buckets {
+  name: "try"
+
+  acl_sets: "tryserver"
+
+  swarming {
+    hostname: "chromium-swarm-dev.appspot.com"
+
+    builder_defaults {
+      category: "Chromium CQ"
+      service_account: "chromium-try-builder@chops-service-accounts.iam.gserviceaccount.com"
+      # Max. pending time for builds. CQ considers builds pending >2h as timed
+      # out: http://shortn/_8PaHsdYmlq. Keep this in sync.
+      expiration_secs: 7200 # 2h
+      execution_timeout_secs: 14400  # 4h
+      swarming_tags: "vpython:native-python-wrapper"
+      build_numbers: YES
+      # Adds dimension: "builder:<builder name>" to ensure builder affinity.
+      # To "assign" a bot to a builder, bot config of swarming service should
+      # add the same dimension to the bot.
+      auto_builder_dimension: YES
+      recipe {
+        cipd_package: "infra/recipe_bundles/chromium.googlesource.com/chromium/tools/build"
+        cipd_version: "refs/heads/master"
+        name: "chromium_trybot"
+        properties_j: "$kitchen:{\"git_auth\": true, \"devshell\": true}"
+      }
+    }
+
+    builders {
+      name: "mac_upload_clang"
+      dimensions: "os:Mac"
+      mixins: "xcode-mac-9a235"
+      recipe {
+        name: "chromium_upload_clang"
+        properties: "mastername:tryserver.chromium.mac"
+      }
+    }
+  }
+}