Certificate Transparency: Start tracking logs' state

net/cert/signed_certificate_timestamp.cc

Index: net/cert/signed_certificate_timestamp.cc
diff --git a/net/cert/signed_certificate_timestamp.cc b/net/cert/signed_certificate_timestamp.cc
index f5f9c946481ead42932d80b107b4d79445daf856..b673afbe8fb1f261ab7dce54ff3fdb84626ccd7e 100644
--- a/net/cert/signed_certificate_timestamp.cc
+++ b/net/cert/signed_certificate_timestamp.cc
@@ -89,6 +89,13 @@ void LogEntry::Reset() {
 
 DigitallySigned::DigitallySigned() {}
 
+DigitallySigned::DigitallySigned(HashAlgorithm hash_algo,
+                                 SignatureAlgorithm sig_algo,
+                                 const std::string& sig_data)
+    : hash_algorithm(hash_algo),
+      signature_algorithm(sig_algo),
+      signature_data(sig_data) {}
+
 DigitallySigned::~DigitallySigned() {}
 
 bool DigitallySigned::SignatureParametersMatch(