Make protobuf enums canonical for ReadState/WriteState/ConnectState.

extensions/browser/api/cast_channel/logger_util.h

 // Copyright 2014 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.
 
 #ifndef EXTENSIONS_BROWSER_API_CAST_CHANNEL_LOGGER_UTIL_H_
 #define EXTENSIONS_BROWSER_API_CAST_CHANNEL_LOGGER_UTIL_H_
 
-#include "extensions/browser/api/cast_channel/logging.pb.h"
+#include "extensions/common/api/cast_channel.h"
+#include "extensions/common/api/cast_channel/logging.pb.h"
 
 namespace extensions {
 namespace core_api {
 namespace cast_channel {
+// Converts an IDL "ChannelError" to a proto enum "ErrorState".
+proto::ErrorState ErrorStateToProto(ChannelError state);
 
-// TODO(mfoltz): Move the *ToProto functions from cast_socket.cc here.
-// CastSocket should not need to know details of the logging protocol message.
+// Converts an IDL "ReadyState" to a proto enum "ReadyState".
+proto::ReadyState ReadyStateToProto(ReadyState state);
 
 // Holds the most recent errors encountered by a CastSocket.
 struct LastErrors {
  public:
   LastErrors();
   ~LastErrors();
 
   // The most recent event that occurred at the time of the error.
   proto::EventType event_type;
 
   // The most recent ChallengeReplyErrorType logged for the socket.
   proto::ChallengeReplyErrorType challenge_reply_error_type;
 
   // The most recent net_return_value logged for the socket.
   int net_return_value;
 
   // The most recent NSS error logged for the socket.
   int nss_error_code;
 };
 
 }  // namespace cast_channel
 }  // namespace api
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_CAST_CHANNEL_LOGGER_UTIL_H_