net: allow invalid TransportSecurityState to process invalid DNS names.

net/base/dns_util.cc

 // Copyright (c) 2011 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/base/dns_util.h"
 
 #include <cstring>
 
 namespace net {
 
@@ skipping 62 matching lines @@
       ret += ".";
 
     if (static_cast<unsigned>(domain[i]) + i + 1 > domain.size())
       return std::string();
 
     domain.substr(i + 1, domain[i]).AppendToString(&ret);
   }
   return ret;
 }
 
-bool IsSTD3ASCIIValidCharacter(char c) {
-  if (c <= 0x2c)
-    return false;
-  if (c >= 0x7b)
-    return false;
-  if (c >= 0x2e && c <= 0x2f)
-    return false;
-  if (c >= 0x3a && c <= 0x40)
-    return false;
-  if (c >= 0x5b && c <= 0x60)
-    return false;
-  return true;
-}
-
 std::string TrimEndingDot(const base::StringPiece& host) {
   base::StringPiece host_trimmed = host;
   size_t len = host_trimmed.length();
   if (len > 1 && host_trimmed[len - 1] == '.') {
     host_trimmed.remove_suffix(1);
   }
   return host_trimmed.as_string();
 }
 
 }  // namespace net