Revert of Refactoring of Cast-related crypto code

chrome/common/extensions/api/networking_private/networking_private_crypto.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 CHROME_COMMON_EXTENSIONS_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_CRYPTO_H_
 #define CHROME_COMMON_EXTENSIONS_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_CRYPTO_H_
 
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 
 namespace networking_private_crypto {
 
 // Verify that the credentials described by |certificate| and |signed_data|
 // are valid as follows:
 // 1) The MAC address listed in the certificate matches |connected_mac|.
 // 2) The certificate is a valid PEM encoded certificate signed by trusted CA.
 // 3) |signature| is a valid signature for |data|, using the public key in
 // |certificate|
-bool VerifyCredentials(
-    const std::string& certificate,
-    const std::vector<std::string>& intermediate_certificates,
-    const std::string& signature,
-    const std::string& data,
-    const std::string& connected_mac);
+bool VerifyCredentials(const std::string& certificate,
+                       const std::string& signature,
+                       const std::string& data,
+                       const std::string& connected_mac);
 
 // Encrypt |data| with |public_key|. |public_key| is a DER-encoded
 // RSAPublicKey. |data| is some string of bytes that is smaller than the
 // maximum length permissible for PKCS#1 v1.5 with a key of |public_key| size.
 //
 // Returns true on success, storing the encrypted result in
 // |encrypted_output|.
 bool EncryptByteString(const std::vector<uint8_t>& public_key,
                        const std::string& data,
                        std::vector<uint8_t>* encrypted_output);
 
 // Decrypt |encrypted_data| with |private_key_pem|. |private_key_pem| is the
 // PKCS8 PEM-encoded private key. |encrypted_data| is data encrypted with
 // EncryptByteString. Used in NetworkingPrivateCryptoTest::EncryptString test.
 // Returns true on success, storing the decrypted result in
 // |decrypted_output|.
 bool DecryptByteString(const std::string& private_key_pem,
                        const std::vector<uint8_t>& encrypted_data,
                        std::string* decrypted_output);
 
+// The trusted public key as a DER-encoded PKCS#1 RSAPublicKey structure.
+extern const uint8_t kTrustedCAPublicKeyDER[];
+
+// The length of |kTrustedCAPublicKeyDER| in bytes.
+extern const size_t kTrustedCAPublicKeyDERLength;
+
 }  // namespace networking_private_crypto
 
 #endif  // CHROME_COMMON_EXTENSIONS_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_CRYPTO_H_