Make HTTP middleware easier to use

server/prpc/server_test.go

Index: server/prpc/server_test.go
diff --git a/server/prpc/server_test.go b/server/prpc/server_test.go
index 664896045d792cad83fb3e97a48bc7e3065461f4..4fe3828ee77b36b17f69b44e808afdebe2142aee 100644
--- a/server/prpc/server_test.go
+++ b/server/prpc/server_test.go
@@ -11,7 +11,6 @@ import (
 	"strconv"
 	"testing"
 
-	"github.com/julienschmidt/httprouter"
 	"golang.org/x/net/context"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
@@ -19,7 +18,7 @@ import (
 	"github.com/luci/luci-go/common/prpc"
 	prpccommon "github.com/luci/luci-go/common/prpc"
 	"github.com/luci/luci-go/server/auth"
-	"github.com/luci/luci-go/server/middleware"
+	"github.com/luci/luci-go/server/router"
 
 	. "github.com/smartystreets/goconvey/convey"
 )
@@ -65,8 +64,8 @@ func TestServer(t *testing.T) {
 
 		Convey("Handlers", func() {
 			c := context.Background()
-			r := httprouter.New()
-			server.InstallHandlers(r, middleware.TestingBase(c))
+			r := router.New()
+			server.InstallHandlers(r, []router.Handler{router.HandlerWithContext(c)})
 			res := httptest.NewRecorder()
 			hiMsg := bytes.NewBufferString(`name: "Lucy"`)
 			req, err := http.NewRequest("POST", "/prpc/prpc.Greeter/SayHello", hiMsg)