LogDog: Update to archival V2.

common/api/logdog_coordinator/services/v1/state.proto

 // Copyright 2016 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.
 
 syntax = "proto3";
 
 package logdog;
 
-import "google/protobuf/timestamp.proto";
-
 // LogStreamState is the log stream state value communicated to services.
 message LogStreamState {
   // Path is the log stream's path.
   string path = 1;
   // The log stream's secret.
   //
   // Note that the secret is returned! This is okay, since this endpoint is only
   // accessible to trusted services. The secret can be cached by services to
   // validate stream information without needing to ping the Coordinator in
   // between each update.
   bytes secret = 2;
 
         // ProtoVersion is the protobuf version for this stream.
         string proto_version = 3;
 
         // The stream index of the log stream's terminal message. If the value is -1,
   // the log is still streaming.
         int64 terminal_index = 4;
 
         // If the log stream has been archived.
         bool archived = 5;
         // If the log stream has been purged.
         bool purged = 6;
 }