Refactor client cert private key handling.

content/public/browser/client_certificate_delegate.h

Index: content/public/browser/client_certificate_delegate.h
diff --git a/content/public/browser/client_certificate_delegate.h b/content/public/browser/client_certificate_delegate.h
index d957fd995b3fc26665a5d49cbcae0011642d10c7..93f02826176cc7e12cc5eb1c96a9c6d017f1e625 100644
--- a/content/public/browser/client_certificate_delegate.h
+++ b/content/public/browser/client_certificate_delegate.h
@@ -8,6 +8,7 @@
 #include "base/macros.h"
 
 namespace net {
+class SSLPrivateKey;
 class X509Certificate;
 }
 
@@ -21,10 +22,12 @@ class ClientCertificateDelegate {
   ClientCertificateDelegate() {}
   virtual ~ClientCertificateDelegate() {}
 
-  // Continue the request with |cert|. |cert| may be nullptr to continue without
-  // supplying a certificate. This decision will be remembered for future
-  // requests to the domain.
-  virtual void ContinueWithCertificate(net::X509Certificate* cert) = 0;
+  // Continue the request with |cert| and matching |key|. |cert| may be nullptr
+  // to continue without supplying a certificate. This decision will be
+  // remembered for future requests to the domain.
+  virtual void ContinueWithCertificate(
+      scoped_refptr<net::X509Certificate> cert,
+      scoped_refptr<net::SSLPrivateKey> key) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ClientCertificateDelegate);