Simplify memory package interface.

go/src/infra/gae/libs/meta/eg_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 meta
 
 import (
         "testing"
 
         "golang.org/x/net/context"
 
         "infra/gae/libs/wrapper"
         "infra/gae/libs/wrapper/memory"
 
         . "github.com/smartystreets/goconvey/convey"
 )
 
 func TestGetEntityGroupVersion(t *testing.T) {
         t.Parallel()
 
         Convey("GetEntityGroupVersion", t, func() {
-                c := memory.Use(memory.Enable(context.Background()))
+                c := memory.Use(context.Background())
                 ds := wrapper.GetDS(c)
 
                 type A struct {
                         ID  int64 `datastore:"-" goon:"id"`
                         Val int
                 }
 
                 a := &A{Val: 10}
                 aKey, err := ds.Put(a)
                 So(err, ShouldBeNil)
@@ skipping 12 matching lines @@
                 So(err, ShouldBeNil)
                 So(v, ShouldEqual, 0)
 
                 tDs := ds.(wrapper.Testable)
                 tDs.BreakFeatures(nil, "Get")
 
                 v, err = GetEntityGroupVersion(c, aKey)
                 So(err.Error(), ShouldContainSubstring, "INTERNAL_ERROR")
         })
 }