[milo] remove linkBase and calculate links directly.

milo/buildsource/swarming/html.go

 // Copyright 2015 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 swarming
 
 import (
         "errors"
         "fmt"
         "net/http"
@@ skipping 96 matching lines @@
                 common.ErrorPage(c, http.StatusBadRequest,
                         fmt.Sprintf("no swarming host: %s", err.Error()))
                 return
         }
         sf, err := NewProdService(c.Context, hostname)
         if err != nil {
                 common.ErrorPage(c, errCode(err), err.Error())
                 return
         }
 
-        result, err := b.bl.SwarmingBuildImpl(c.Context, sf, c.Request.URL.String(), id)
+        result, err := b.bl.SwarmingBuildImpl(c.Context, sf, id)
         if err != nil {
                 common.ErrorPage(c, errCode(err), err.Error())
                 return
         }
 
         templates.MustRender(c.Context, c.Writer, "pages/build.html", templates.Args{
                 "Build": result,
         })
 }
 
 // errCode resolves recognized errors into proper http response codes.
 func errCode(err error) int {
         if err == errUnrecognizedHost {
                 return http.StatusBadRequest
         }
         if isAPINotFound(err) || os.IsNotExist(err) {
                 return http.StatusNotFound
         }
         return http.StatusInternalServerError
 }
 
 // isAPINotFound returns true if err is a HTTP 404 API response.
 func isAPINotFound(err error) bool {
         if apiErr, ok := err.(*googleapi.Error); ok && apiErr.Code == http.StatusNotFound {
                 return true
         }
         return false
 }