Update APIs to use new Google cloud paths.

logdog/client/butler/output/pubsub/pubsubOutput_test.go

 // 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 pubsub
 
 import (
         "bytes"
         "compress/zlib"
         "errors"
         "fmt"
         "io/ioutil"
         "sync"
         "testing"
         "time"
 
+        "cloud.google.com/go/pubsub"
         "github.com/golang/protobuf/proto"
         "github.com/luci/luci-go/common/clock"
         "github.com/luci/luci-go/common/clock/testclock"
         "github.com/luci/luci-go/common/data/recordio"
         gcps "github.com/luci/luci-go/common/gcloud/pubsub"
         "github.com/luci/luci-go/common/proto/google"
         "github.com/luci/luci-go/logdog/api/logpb"
         . "github.com/smartystreets/goconvey/convey"
         "golang.org/x/net/context"
-        "google.golang.org/cloud/pubsub"
 )
 
 type testTopic struct {
         sync.Mutex
 
         err error
 
         msgC          chan *pubsub.Message
         nextMessageID int
 }
@@ skipping 104 matching lines @@
                                 So(st.DiscardedMessages(), ShouldEqual, 0)
                         })
                 })
 
                 Convey(`Will return an error if Publish failed.`, func() {
                         tt.err = errors.New("test: error")
                         So(o.SendBundle(bundle), ShouldNotBeNil)
                 })
         })
 }