Tweak CryptauthDeviceManager to store fetched BeaconSeed data in Base64URL encoding, and retrieve i…

components/cryptauth/eid_generator_unittest.cc

 // Copyright 2015 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.
 
 #include "components/cryptauth/eid_generator.h"
 
 #include <memory>
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
@@ skipping 21 matching lines @@
     base::TimeDelta::FromHours(2).InMilliseconds();
 const int32_t kNumBytesInEidValue = 2;
 const int64_t kNumMsInEidSeedPeriod =
     base::TimeDelta::FromDays(14).InMilliseconds();
 
 // Midnight on 1/1/2020.
 const int64_t kDefaultCurrentPeriodStart = 1577836800000L;
 // 1:43am on 1/1/2020.
 const int64_t kDefaultCurrentTime = 1577843000000L;
 
-// Base64 encoded values for: "firstSeed", "secondSeed", "thirdSeed" and
-// "fourthSeed".
-const std::string kFirstSeed = "Zmlyc3RTZWVk";
-const std::string kSecondSeed = "c2Vjb25kU2VlZA==";
-const std::string kThirdSeed = "dGhpcmRTZWVk";
-const std::string kFourthSeed = "Zm91cnRoU2VlZA==";
+// The Base64 encoded values of these raw data strings are, respectively:
+// "Zmlyc3RTZWVk", "c2Vjb25kU2VlZA==", "dGhpcmRTZWVk","Zm91cnRoU2VlZA==".
+const std::string kFirstSeed = "firstSeed";
+const std::string kSecondSeed = "secondSeed";
+const std::string kThirdSeed = "thirdSeed";
+const std::string kFourthSeed = "fourthSeed";
 
 const std::string kDefaultAdvertisingDevicePublicKey = "publicKey";
 
 static BeaconSeed CreateBeaconSeed(const std::string& data,
                                    const int64_t start_timestamp_ms,
                                    const int64_t end_timestamp_ms) {
   BeaconSeed seed;
   seed.set_data(data);
   seed.set_start_time_millis(start_timestamp_ms);
   seed.set_end_time_millis(end_timestamp_ms);
@@ skipping 703 matching lines @@
   EidGenerator::DataWithTimestamp data_with_timestamp(
       "data", /* start */ 1000L, /* end */ 2000L);
   EXPECT_FALSE(data_with_timestamp.ContainsTime(999L));
   EXPECT_TRUE(data_with_timestamp.ContainsTime(1000L));
   EXPECT_TRUE(data_with_timestamp.ContainsTime(1500L));
   EXPECT_TRUE(data_with_timestamp.ContainsTime(1999L));
   EXPECT_FALSE(data_with_timestamp.ContainsTime(2000L));
 }
 
 }  // namespace cryptauth