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

components/cast_channel/cast_auth_util.h

Index: components/cast_channel/cast_auth_util.h
diff --git a/components/cast_channel/cast_auth_util.h b/components/cast_channel/cast_auth_util.h
deleted file mode 100644
index be187738ef944bcf98189a89c5634e67912f058a..0000000000000000000000000000000000000000
--- a/components/cast_channel/cast_auth_util.h
+++ /dev/null
@@ -1,122 +0,0 @@
-// 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_CAST_AUTH_UTIL_H_
-#define COMPONENTS_CAST_CHANNEL_CAST_AUTH_UTIL_H_
-
-#include <string>
-
-#include "base/memory/ref_counted.h"
-#include "base/time/time.h"
-
-namespace cast_certificate {
-enum class CRLPolicy;
-}
-
-namespace net {
-class X509Certificate;
-class TrustStore;
-}  // namespace net
-
-namespace cast_channel {
-
-class AuthResponse;
-class CastMessage;
-
-struct AuthResult {
- public:
-  enum ErrorType {
-    ERROR_NONE,
-    ERROR_PEER_CERT_EMPTY,
-    ERROR_WRONG_PAYLOAD_TYPE,
-    ERROR_NO_PAYLOAD,
-    ERROR_PAYLOAD_PARSING_FAILED,
-    ERROR_MESSAGE_ERROR,
-    ERROR_NO_RESPONSE,
-    ERROR_FINGERPRINT_NOT_FOUND,
-    ERROR_CERT_PARSING_FAILED,
-    ERROR_CERT_NOT_SIGNED_BY_TRUSTED_CA,
-    ERROR_CANNOT_EXTRACT_PUBLIC_KEY,
-    ERROR_SIGNED_BLOBS_MISMATCH,
-    ERROR_TLS_CERT_VALIDITY_PERIOD_TOO_LONG,
-    ERROR_TLS_CERT_VALID_START_DATE_IN_FUTURE,
-    ERROR_TLS_CERT_EXPIRED,
-    ERROR_CRL_INVALID,
-    ERROR_CERT_REVOKED,
-    ERROR_SENDER_NONCE_MISMATCH,
-  };
-
-  enum PolicyType { POLICY_NONE = 0, POLICY_AUDIO_ONLY = 1 << 0 };
-
-  // Constructs a AuthResult that corresponds to success.
-  AuthResult();
-
-  AuthResult(const std::string& error_message, ErrorType error_type);
-
-  ~AuthResult();
-
-  static AuthResult CreateWithParseError(const std::string& error_message,
-                                         ErrorType error_type);
-
-  bool success() const { return error_type == ERROR_NONE; }
-
-  std::string error_message;
-  ErrorType error_type;
-  unsigned int channel_policies;
-};
-
-class AuthContext {
- public:
-  ~AuthContext();
-
-  // Get an auth challenge context.
-  // The same context must be used in the challenge and reply.
-  static AuthContext Create();
-
-  // Verifies the nonce received in the response is equivalent to the one sent.
-  // Returns success if |nonce_response| matches nonce_
-  AuthResult VerifySenderNonce(const std::string& nonce_response) const;
-
-  // The nonce challenge.
-  const std::string& nonce() const { return nonce_; }
-
- private:
-  explicit AuthContext(const std::string& nonce);
-
-  const std::string nonce_;
-};
-
-// Authenticates the given |challenge_reply|:
-// 1. Signature contained in the reply is valid.
-// 2. Certficate used to sign is rooted to a trusted CA.
-AuthResult AuthenticateChallengeReply(const CastMessage& challenge_reply,
-                                      const net::X509Certificate& peer_cert,
-                                      const AuthContext& auth_context);
-
-// Performs a quick check of the TLS certificate for time validity requirements.
-AuthResult VerifyTLSCertificate(const net::X509Certificate& peer_cert,
-                                std::string* peer_cert_der,
-                                const base::Time& verification_time);
-
-// Auth-library specific implementation of cryptographic signature
-// verification routines. Verifies that |response| contains a
-// valid signature of |signature_input|.
-AuthResult VerifyCredentials(const AuthResponse& response,
-                             const std::string& signature_input);
-
-// Exposed for testing only.
-//
-// Overloaded version of VerifyCredentials that allows modifying
-// the crl policy, trust stores, and verification times.
-AuthResult VerifyCredentialsForTest(
-    const AuthResponse& response,
-    const std::string& signature_input,
-    const cast_certificate::CRLPolicy& crl_policy,
-    net::TrustStore* cast_trust_store,
-    net::TrustStore* crl_trust_store,
-    const base::Time& verification_time);
-
-}  // namespace cast_channel
-
-#endif  // COMPONENTS_CAST_CHANNEL_CAST_AUTH_UTIL_H_