Change gae to apache 2 license.

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.
+// Copyright 2015 The LUCI Authors. All rights reserved.
+// Use of this source code is governed under the Apache License, Version 2.0
+// that can be found in the LICENSE file.
 
 package txnBuf
 
 import (
         "bytes"
         "fmt"
         "math/rand"
         "testing"
 
         "github.com/luci/gae/filter/count"
@@ skipping 887 matching lines @@
                                         val := pm["Value"]
                                         So(val[len(val)-1].Value(), ShouldResemble, "wat")
                                 }), ShouldBeNil)
                         })
 
                 })
 
         })
 
 }