Update from https://crrev.com/314320

net/cert/crl_set.cc

 // Copyright (c) 2012 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 "net/cert/crl_set.h"
 
 #include "base/logging.h"
 #include "base/time/time.h"
 
 namespace net {
@@ skipping 26 matching lines @@
   if (!serial.empty() && (serial[0] & 0x80) != 0) {
     // This serial number is negative but the process which generates CRL sets
     // will reject any certificates with negative serial numbers as invalid.
     return UNKNOWN;
   }
 
   // Remove any leading zero bytes.
   while (serial.size() > 1 && serial[0] == 0x00)
     serial.remove_prefix(1);
 
-  base::hash_map<std::string, size_t>::const_iterator i =
+  base::hash_map<std::string, size_t>::const_iterator crl_index =
       crls_index_by_issuer_.find(issuer_spki_hash.as_string());
-  if (i == crls_index_by_issuer_.end())
+  if (crl_index == crls_index_by_issuer_.end())
     return UNKNOWN;
-  const std::vector<std::string>& serials = crls_[i->second].second;
+  const std::vector<std::string>& serials = crls_[crl_index->second].second;
 
   for (std::vector<std::string>::const_iterator i = serials.begin();
        i != serials.end(); ++i) {
     if (base::StringPiece(*i) == serial)
       return REVOKED;
   }
 
   return GOOD;
 }
 
@@ skipping 36 matching lines @@
     crl_set->crls_index_by_issuer_[spki] = 0;
   }
 
   if (!serial_number.empty())
     crl_set->crls_[0].second.push_back(serial_number);
 
   return crl_set;
 }
 
 }  // namespace net