[logdog] Replace Tumble with push queues.

logdog/appengine/cmd/coordinator/backend/main.go

Index: logdog/appengine/cmd/coordinator/backend/main.go
diff --git a/logdog/appengine/cmd/coordinator/backend/main.go b/logdog/appengine/cmd/coordinator/backend/main.go
index cdf25354e67b2f1360336d6dc06d3b11e858c9ca..c8383868e345282ba5d381e6d76c95a4636eaae3 100644
--- a/logdog/appengine/cmd/coordinator/backend/main.go
+++ b/logdog/appengine/cmd/coordinator/backend/main.go
@@ -22,6 +22,7 @@ import (
 
 	"github.com/luci/luci-go/appengine/gaemiddleware"
 	"github.com/luci/luci-go/logdog/appengine/coordinator"
+	"github.com/luci/luci-go/logdog/appengine/coordinator/backend"
 	"github.com/luci/luci-go/server/router"
 	"github.com/luci/luci-go/tumble"
 
@@ -37,6 +38,7 @@ func init() {
 	base := gaemiddleware.BaseProd().Extend(coordinator.ProdCoordinatorService)
 	tmb.InstallHandlers(r, base)
 	gaemiddleware.InstallHandlersWithMiddleware(r, base)
+	backend.InstallHandlers(r, base)
 
 	http.Handle("/", r)
 }