Milo: Add builder name to builder page

milo/appengine/buildbot/builder.go

 // Copyright 2016 The LUCI Authors. All rights reserved.
 // Use of this source code is governed under the Apache License, Version 2.0
 // that can be found in the LICENSE file.
 
 package buildbot
 
 import (
         "encoding/json"
         "fmt"
         "sort"
@@ skipping 96 matching lines @@
                 }
         }
         return results
 }
 
 // builderImpl is the implementation for getting a milo builder page from buildbot.
 // This gets:
 // * Current Builds from querying the master json from the datastore.
 // * Recent Builds from a cron job that backfills the recent builds.
 func builderImpl(c context.Context, masterName, builderName string) (*resp.Builder, error) {
-        result := &resp.Builder{}
+        result := &resp.Builder{
+                Name: builderName,
+        }
         master, t, err := getMasterJSON(c, masterName)
         switch {
         case err == ds.ErrNoSuchEntity:
                 return nil, errMasterNotFound
         case err != nil:
                 return nil, err
         }
         if clock.Now(c).Sub(t) > 2*time.Minute {
                 warning := fmt.Sprintf(
                         "WARNING: Master data is stale (last updated %s)", t)
@@ skipping 54 matching lines @@
 
         for _, fb := range recentBuilds {
                 // Yes recent builds is synonymous with finished builds.
                 // TODO(hinoka): Implement limits.
                 if fb != nil {
                         result.FinishedBuilds = append(result.FinishedBuilds, fb)
                 }
         }
         return result, nil
 }