test-results: Add revisions handler

go/src/infra/appengine/test-results/frontend/handlers.go

 package frontend
 
 import (
         "encoding/json"
         "html/template"
         "net/http"
         "time"
 
         "google.golang.org/appengine"
 
@@ skipping 25 matching lines @@
         r.GET("/updatebuilders", baseMW, updateBuildersHandler)
         r.GET("/builderstate", baseMW, getBuilderStateHandler)
         r.GET("/updatebuilderstate", baseMW, updateBuilderStateHandler)
 
         r.POST(
                 "/internal/delete-keys",
                 baseMW.Extend(gaemiddleware.RequireTaskQueue(deleteKeysQueueName)),
                 deleteKeysHandler,
         )
 
+        r.GET("/revision_range", baseMW, revisionHandler)
+
         http.DefaultServeMux.Handle("/", r)
 }
 
 // templatesMiddleware returns the templates middleware.
 func templatesMiddleware() router.Middleware {
         return templates.WithTemplates(&templates.Bundle{
                 Loader:    templates.FileSystemLoader("templates"),
                 DebugMode: appengine.IsDevAppServer(),
                 FuncMap: template.FuncMap{
                         "timeParams": func(t time.Time) string {
@@ skipping 31 matching lines @@
         }
 
         if err := datastore.Get(c).Delete(dkeys); err != nil {
                 logging.WithError(err).Errorf(c, "deleteKeysHandler")
                 w.WriteHeader(http.StatusInternalServerError)
                 return
         }
 
         w.WriteHeader(http.StatusOK)
 }