Revert of Migrate tsmon protos to proto3

common/tsmon/flush_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 tsmon
 
 import (
         "testing"
         "time"
 
+        "github.com/golang/protobuf/proto"
         "golang.org/x/net/context"
 
         "github.com/luci/luci-go/common/clock"
         "github.com/luci/luci-go/common/clock/testclock"
         "github.com/luci/luci-go/common/tsmon/field"
         "github.com/luci/luci-go/common/tsmon/target"
         "github.com/luci/luci-go/common/tsmon/types"
 
         pb "github.com/luci/luci-go/common/tsmon/ts_mon_proto"
 
         . "github.com/smartystreets/goconvey/convey"
 )
 
 func TestFlush(t *testing.T) {
         c := context.Background()
 
-        defaultTarget := (*target.Task)(&pb.Task{ServiceName: "test"})
+        defaultTarget := (*target.Task)(&pb.Task{
+                ServiceName: proto.String("test"),
+        })
 
         Convey("Sends a metric", t, func() {
                 c, s, m := WithFakes(c)
                 s.Cells = []types.Cell{
                         {
                                 types.MetricInfo{
                                         Name:      "foo",
                                         Fields:    []field.Field{},
                                         ValueType: types.StringType,
                                 },
@@ skipping 111 matching lines @@
                 // Each 'flush' gets blocked on sending into 'moments'. Once unblocked, it
                 // advances timer by 'interval' sec (1 sec in the test).
                 So(<-moments, ShouldEqual, 1)
                 So(<-moments, ShouldEqual, 2)
                 // and so on ...
 
                 // Doesn't timeout => works.
                 flusher.stop()
         })
 }