Update from https://crrev.com/308996

net/cert/ct_ev_whitelist.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 NET_CERT_CT_EV_WHITELIST_H_
 #define NET_CERT_CT_EV_WHITELIST_H_
 
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "net/base/net_export.h"
 
+namespace base {
+
+class Version;
+
+}  // namespace base
+
 namespace net {
 
 namespace ct {
 
 class NET_EXPORT EVCertsWhitelist
     : public base::RefCountedThreadSafe<EVCertsWhitelist> {
  public:
   // Returns true if the |certificate_hash| appears in the EV certificate hashes
   // whitelist.
   virtual bool ContainsCertificateHash(
       const std::string& certificate_hash) const = 0;
 
   // Returns true if the global EV certificate hashes whitelist is non-empty,
   // false otherwise.
   virtual bool IsValid() const = 0;
 
+  // Returns the version of the whitelist in use
+  virtual base::Version Version() const = 0;
+
  protected:
   virtual ~EVCertsWhitelist() {}
 
  private:
   friend class base::RefCountedThreadSafe<EVCertsWhitelist>;
 };
 
 }  // namespace ct
 
 }  // namespace net
 
 #endif  // NET_CERT_CT_EV_WHITELIST_H_