[milo] Add BuildSummary and common models.

milo/appengine/logdog/build.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 logdog
 
 import (
         "errors"
         "fmt"
         "time"
@@ skipping 185 matching lines @@
                 if server == "" {
                         server = b.Host
                 }
 
                 prefix := types.StreamName(ls.Prefix)
                 if prefix == "" {
                         prefix = b.Prefix
                 }
 
                 u := viewer.GetURL(server, b.Project, prefix.Join(types.StreamName(ls.Name)))
-                link := resp.Link{
-                        Label: l.Label,
-                        URL:   u,
-                }
+                link := resp.NewLink(l.Label, u)
                 if link.Label == "" {
                         link.Label = ls.Name
                 }
-                return &link
+                return link
 
         case *miloProto.Link_Url:
-                link := resp.Link{
-                        Label: l.Label,
-                        URL:   t.Url,
-                }
+                link := resp.NewLink(l.Label, t.Url)
                 if link.Label == "" {
                         link.Label = "unnamed"
                 }
-                return &link
+                return link
 
         default:
                 // Don't know how to render.
                 return nil
         }
 }