Remove the test-only X509Certificate constructor

net/cert/x509_certificate.cc

Index: net/cert/x509_certificate.cc
diff --git a/net/cert/x509_certificate.cc b/net/cert/x509_certificate.cc
index 73c02bb3463bf0ecf996701cb33da24819ab2a2c..48cc5b5c8c509943151747cb8da85120c64ee2d8 100644
--- a/net/cert/x509_certificate.cc
+++ b/net/cert/x509_certificate.cc
@@ -224,17 +224,6 @@ void SplitOnChar(const base::StringPiece& src,
 
 }  // namespace
 
-X509Certificate::X509Certificate(const std::string& subject,
-                                 const std::string& issuer,
-                                 base::Time start_date,
-                                 base::Time expiration_date)
-    : subject_(subject),
-      issuer_(issuer),
-      valid_start_(start_date),
-      valid_expiry_(expiration_date),
-      cert_handle_(NULL) {
-}
-
 // static
 scoped_refptr<X509Certificate> X509Certificate::CreateFromHandle(
     OSCertHandle cert_handle,