infra: Add a presubmit builder to the CQ.

Change-Id: Iec65e03fb8cb9d673cd611968e4204a46e92c561

infra/config/branch/cq.cfg

@@ -16,6 +16,7 @@ verifiers {
   try_job {
     buckets {
       name: "luci.dawn.try"
+      builders { name: "presubmit" }
       builders { name: "linux-clang-dbg-x64" }
       builders { name: "linux-clang-rel-x64" }
       builders { name: "mac-dbg" }

infra/config/global/cr-buildbucket.cfg

@@ -187,6 +187,8 @@ buckets: {
 
     builder_defaults {
       dimensions: "pool:luci.flex.try"
+      # We have 32bit test configurations but some of our toolchain is 64bit (like CIPD)
+      dimensions: "cpu:x86-64"
       caches {
         path: "win_toolchain"
         name: "win_toolchain"
@@ -200,6 +202,16 @@ buckets: {
       service_account: "dawn-try-builder@chops-service-accounts.iam.gserviceaccount.com"
     }
 
+    builders {
+      name: "presubmit"
+      dimensions: "os:Ubuntu-14.04"
+      recipe {
+        name: "run_presubmit"
+        properties: "repo_name:dawn"
+        properties_j: "runhooks:true"
+      }
+    }
+
     # A subset of the CI configurations are used for the CQ. We still mirror
     # the CI builders here so we can trigger tryjobs on their specific
     # configuration.

infra/config/global/luci-milo.cfg

@@ -75,6 +75,10 @@ consoles {
   manifest_name: "PATCHED"
   builder_view_only: true
 
+  builders {
+    name: "buildbucket/luci.dawn.try/presubmit"
+  }
+
   builders {
     name: "buildbucket/luci.dawn.try/linux-clang-dbg-x64"
   }