Make ServerBoundCertStore interface async, move SQLiteServerBoundCertStore load onto DB thread.

net/base/server_bound_cert_service.h

Index: net/base/server_bound_cert_service.h
diff --git a/net/base/server_bound_cert_service.h b/net/base/server_bound_cert_service.h
index c8c9a05ba95835db4f777c31fa1e7e80601ca9bb..151b279a559cc8d845ec347a5c06c5b2c978dcda 100644
--- a/net/base/server_bound_cert_service.h
+++ b/net/base/server_bound_cert_service.h
@@ -128,9 +128,20 @@ class NET_EXPORT ServerBoundCertService
   // callback will not be called.
   void CancelRequest(ServerBoundCertServiceRequest* req);
 
-  void HandleResult(const std::string& server_identifier,
-                    int error,
-                    scoped_ptr<ServerBoundCertStore::ServerBoundCert> cert);
+  void GotServerBoundCert(const std::string& server_identifier,
+                          SSLClientCertType type,
+                          base::Time expiration_time,
+                          const std::string& key,
+                          const std::string& cert);
+  void GeneratedServerBoundCert(
+      const std::string& server_identifier,
+      int error,
+      scoped_ptr<ServerBoundCertStore::ServerBoundCert> cert);
+  void HandleResult(int error,
+                    const std::string& server_identifier,
+                    SSLClientCertType type,
+                    const std::string& private_key,
+                    const std::string& cert);
 
   scoped_ptr<ServerBoundCertStore> server_bound_cert_store_;
   scoped_refptr<base::TaskRunner> task_runner_;