Remove dependence on a message loop for net::PathBuilder.

net/cert/internal/cert_issuer_source_static.h

 // Copyright 2016 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_INTERNAL_CERT_ISSUER_SOURCE_STATIC_H_
 #define NET_CERT_INTERNAL_CERT_ISSUER_SOURCE_STATIC_H_
 
 #include <unordered_map>
 
 #include "base/strings/string_piece.h"
 #include "net/base/net_export.h"
 #include "net/cert/internal/cert_issuer_source.h"
 
 namespace net {
 
 // Synchronously returns issuers from a pre-supplied set.
 class NET_EXPORT CertIssuerSourceStatic : public CertIssuerSource {
  public:
   CertIssuerSourceStatic();
   ~CertIssuerSourceStatic() override;
 
   // Adds |cert| to the set of certificates that this CertIssuerSource will
   // provide.
   void AddCert(scoped_refptr<ParsedCertificate> cert);
 
   // CertIssuerSource implementation:
   void SyncGetIssuersOf(const ParsedCertificate* cert,
                         ParsedCertificateList* issuers) override;
   void AsyncGetIssuersOf(const ParsedCertificate* cert,
-                         const IssuerCallback& issuers_callback,
                          std::unique_ptr<Request>* out_req) override;
 
  private:
   // The certificates that the CertIssuerSourceStatic can return, keyed on the
   // normalized subject value.
   std::unordered_multimap<base::StringPiece,
                           scoped_refptr<ParsedCertificate>,
                           base::StringPieceHash>
       intermediates_;
 
   DISALLOW_COPY_AND_ASSIGN(CertIssuerSourceStatic);
 };
 
 }  // namespace net
 
 #endif  // NET_CERT_INTERNAL_CERT_ISSUER_SOURCE_STATIC_H_