Make ONCCertificateImporter async.

chrome/browser/ui/webui/net_internals/net_internals_ui.cc

Index: chrome/browser/ui/webui/net_internals/net_internals_ui.cc
diff --git a/chrome/browser/ui/webui/net_internals/net_internals_ui.cc b/chrome/browser/ui/webui/net_internals/net_internals_ui.cc
index 621b78ad6e56e6b78936b766a7140c818d70738b..caa8cbf4388eea16421e5ea4cc1f0fa44d98a8f2 100644
--- a/chrome/browser/ui/webui/net_internals/net_internals_ui.cc
+++ b/chrome/browser/ui/webui/net_internals/net_internals_ui.cc
@@ -257,6 +257,13 @@ class NetInternalsMessageHandler
   void ImportONCFileToNSSDB(const std::string& onc_blob,
                             const std::string& passcode,
                             net::NSSCertDatabase* nssdb);
+
+  // Called back by the CertificateImporter when a certificate import finished.
+  // |previous_error| contains earlier errors during this import.
+  void OnCertificatesImported(
+      const std::string& previous_error,
+      bool success,
+      const net::CertificateList& onc_trusted_certificates);
 #endif
 
  private:
@@ -1407,38 +1414,52 @@ void NetInternalsMessageHandler::ImportONCFileToNSSDB(
     const std::string& onc_blob,
     const std::string& passcode,
     net::NSSCertDatabase* nssdb) {
-  std::string error;
   user_manager::User* user = chromeos::ProfileHelper::Get()->GetUserByProfile(
       Profile::FromWebUI(web_ui()));
 
-  if (user) {
-    onc::ONCSource onc_source = onc::ONC_SOURCE_USER_IMPORT;
-
-    base::ListValue network_configs;
-    base::DictionaryValue global_network_config;
-    base::ListValue certificates;
-    if (!chromeos::onc::ParseAndValidateOncForImport(onc_blob,
-                                                     onc_source,
-                                                     passcode,
-                                                     &network_configs,
-                                                     &global_network_config,
-                                                     &certificates)) {
-      error = "Errors occurred during the ONC parsing. ";
-    }
-
-    chromeos::onc::CertificateImporterImpl cert_importer(nssdb);
-    if (!cert_importer.ImportCertificates(certificates, onc_source, NULL))
-      error += "Some certificates couldn't be imported. ";
+  if (!user) {
+    std::string error = "User not found.";
+    SendJavascriptCommand("receivedONCFileParse", new base::StringValue(error));
+    return;
+  }
 
-    std::string network_error;
-    chromeos::onc::ImportNetworksForUser(user, network_configs, &network_error);
-    if (!network_error.empty())
-      error += network_error;
-  } else {
-    error = "User not found.";
+  std::string error;
+  onc::ONCSource onc_source = onc::ONC_SOURCE_USER_IMPORT;
+  base::ListValue network_configs;
+  base::DictionaryValue global_network_config;
+  base::ListValue certificates;
+  if (!chromeos::onc::ParseAndValidateOncForImport(onc_blob,
+                                                   onc_source,
+                                                   passcode,
+                                                   &network_configs,
+                                                   &global_network_config,
+                                                   &certificates)) {
+    error = "Errors occurred during the ONC parsing. ";
   }
 
-  LOG_IF(ERROR, !error.empty()) << error;
+  std::string network_error;
+  chromeos::onc::ImportNetworksForUser(user, network_configs, &network_error);
+  if (!network_error.empty())
+    error += network_error;
+
+  chromeos::onc::CertificateImporterImpl cert_importer(
+      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO), nssdb);
+  cert_importer.ImportCertificates(
+      certificates,
+      onc_source,
+      base::Bind(&NetInternalsMessageHandler::OnCertificatesImported,
+                 AsWeakPtr(),
+                 error));
+}
+
+void NetInternalsMessageHandler::OnCertificatesImported(
+    const std::string& previous_error,
+    bool success,
+    const net::CertificateList& /* unused onc_trusted_certificates */) {
+  std::string error = previous_error;
+  if (!success)
+    error += "Some certificates couldn't be imported. ";
+
   SendJavascriptCommand("receivedONCFileParse", new base::StringValue(error));
 }