LogDog: Add Butler Output package.

common/logdog/butlerproto/proto_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 butlerproto
 
 import (
         "bytes"
         "io"
         "strings"
@@ skipping 190 matching lines @@
 
                                         r, err := read(&buf)
                                         So(err, ShouldBeNil)
                                         So(r.Metadata.Compression, ShouldEqual, protocol.ButlerMetadata_ZLIB)
                                         So(r.Bundle.Source, ShouldEqual, bundle.Source)
                                 })
                         })
                 })
         })
 }