Revert of [cast_channel] Move cast_channel related files from //extensions to //components

components/cast_channel/logger.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 COMPONENTS_CAST_CHANNEL_LOGGER_H_
-#define COMPONENTS_CAST_CHANNEL_LOGGER_H_
-
-#include <stddef.h>
-
-#include <deque>
-#include <map>
-#include <memory>
-#include <string>
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/threading/thread_checker.h"
-#include "components/cast_channel/proto/logging.pb.h"
-
-namespace cast_channel {
-
-struct AuthResult;
-
-// 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;
-};
-
-// Called with events that occur on a Cast Channel and remembers any that
-// warrant reporting to the caller in LastErrors.
-class Logger : public base::RefCountedThreadSafe<Logger> {
- public:
-  Logger();
-
-  // For events that involves socket / crypto operations that returns a value.
-  void LogSocketEventWithRv(int channel_id,
-                            proto::EventType event_type,
-                            int rv);
-
-  // For AUTH_CHALLENGE_REPLY event.
-  void LogSocketChallengeReplyEvent(int channel_id,
-                                    const AuthResult& auth_result);
-
-  // Returns the last errors logged for |channel_id|.
-  LastErrors GetLastErrors(int channel_id) const;
-
-  // Removes a LastErrors entry for |channel_id| if one exists.
-  void ClearLastErrors(int channel_id);
-
- private:
-  friend class base::RefCountedThreadSafe<Logger>;
-  ~Logger();
-
-  using LastErrorsMap = std::map<int, LastErrors>;
-
-  // Returns a SocketEvent proto with common fields (EventType, timestamp)
-  // populated.
-  proto::SocketEvent CreateEvent(proto::EventType event_type);
-
-  // Uses |event| associated with |channel_id| to update its LastErrors.
-  void LogSocketEvent(int channel_id, const proto::SocketEvent& socket_event);
-
-  LastErrorsMap last_errors_;
-
-  THREAD_CHECKER(thread_checker_);
-
-  DISALLOW_COPY_AND_ASSIGN(Logger);
-};
-}  // namespace cast_channel
-
-#endif  // COMPONENTS_CAST_CHANNEL_LOGGER_H_