[milo] appengine/* -> *

milo/common/error.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 common
 
 import (
         "github.com/luci/luci-go/server/router"
         "github.com/luci/luci-go/server/templates"
 )
 
 // ErrorPage writes an error page into c.Writer with an http code "code"
 // and custom message.
 func ErrorPage(c *router.Context, code int, message string) {
         c.Writer.WriteHeader(code)
         templates.MustRender(c.Context, c.Writer, "pages/error.html", templates.Args{
                 "Code":    code,
                 "Message": message,
         })
 }