Deleting the copresence API.

components/copresence/tokens.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_COPRESENCE_TOKENS_H_
-#define COMPONENTS_COPRESENCE_TOKENS_H_
-
-#include <string>
-
-#include "base/time/time.h"
-#include "components/copresence/proto/enums.pb.h"
-
-namespace copresence {
-
-// It's an error to define these constructors inline,
-// so they're defined in tokens.cc.
-
-struct TransmittedToken final {
-  TransmittedToken();
-
-  std::string id;
-  TokenMedium medium;
-  base::Time start_time;
-  base::Time stop_time;
-  bool broadcast_confirmed;
-};
-
-struct ReceivedToken final {
-  enum Validity {
-    UNKNOWN = 0,
-    VALID = 1,
-    INVALID = 2
-  };
-
-  ReceivedToken();
-  ReceivedToken(const std::string& id,
-                TokenMedium medium,
-                base::Time last_time);
-
-  std::string id;
-  TokenMedium medium;
-  base::Time start_time;
-  base::Time last_time;
-  Validity valid;
-};
-
-}  // namespace copresence
-
-#endif  // COMPONENTS_COPRESENCE_TOKENS_H_