Update two obsolete RFC references.

net/http/http_byte_range.h

 // 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.
 
 #ifndef NET_HTTP_HTTP_BYTE_RANGE_H_
 #define NET_HTTP_HTTP_BYTE_RANGE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "net/base/net_export.h"
 
 namespace net {
 
 // A container class that represents a "range" specified for range request
-// specified by RFC 2616 Section 14.35.1.
-// http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1
+// specified by RFC 7233 Section 2.1.
+// https://tools.ietf.org/html/rfc7233#section-2.1
 class NET_EXPORT HttpByteRange {
  public:
   HttpByteRange();
 
   // Convenience constructors.
   static HttpByteRange Bounded(int64 first_byte_position,
                                int64 last_byte_position);
   static HttpByteRange RightUnbounded(int64 first_byte_position);
   static HttpByteRange Suffix(int64 suffix_length);
 
@@ skipping 34 matching lines @@
  private:
   int64 first_byte_position_;
   int64 last_byte_position_;
   int64 suffix_length_;
   bool has_computed_bounds_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_BYTE_RANGE_H_