Clean up callback interfaces.

filter/txnBuf/txnbuf_test.go

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package txnBuf
 
 import (
         "bytes"
         "fmt"
         "math/rand"
@@ skipping 838 matching lines @@
                                 So(vals, ShouldResemble, []*Foo{foo1, projectData[0], foo7})
 
                         })
 
                         Convey("start transaction from inside query", func() {
                                 _, _, ds := mkds(projectData)
                                 So(ds.RunInTransaction(func(c context.Context) error {
                                         ds := datastore.Get(c)
 
                                         q := datastore.NewQuery("Foo").Ancestor(root)
-                                        return ds.Run(q, func(pm datastore.PropertyMap, _ datastore.CursorCB) bool {
+                                        return ds.Run(q, func(pm datastore.PropertyMap) {
                                                 So(ds.RunInTransaction(func(c context.Context) error {
                                                         ds := datastore.Get(c)
                                                         pm["Value"] = append(pm["Value"], datastore.MkProperty("wat"))
                                                         return ds.Put(pm)
                                                 }, nil), ShouldBeNil)
-                                                return true
                                         })
                                 }, &datastore.TransactionOptions{XG: true}), ShouldBeNil)
 
-                                So(ds.Run(datastore.NewQuery("Foo"), func(pm datastore.PropertyMap, _ datastore.CursorCB) bool {
+                                So(ds.Run(datastore.NewQuery("Foo"), func(pm datastore.PropertyMap) {
                                         val := pm["Value"]
                                         So(val[len(val)-1].Value(), ShouldResemble, "wat")
-                                        return true
                                 }), ShouldBeNil)
                         })
 
                 })
 
         })
 
 }