Make CertificateHandler a proper interface of CertificateImporter.

chromeos/network/onc/mock_certificate_importer.cc

Index: chromeos/network/onc/mock_certificate_importer.cc
diff --git a/chromeos/network/mock_certificate_handler.cc b/chromeos/network/onc/mock_certificate_importer.cc
similarity index 52%
rename from chromeos/network/mock_certificate_handler.cc
rename to chromeos/network/onc/mock_certificate_importer.cc
index 8ff080f56ef0947fced48cc9efd98d8faa34e0d0..ebbeca60e19141a588e23bf8377bf0997c9330dd 100644
--- a/chromeos/network/mock_certificate_handler.cc
+++ b/chromeos/network/onc/mock_certificate_importer.cc
@@ -2,14 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chromeos/network/mock_certificate_handler.h"
+#include "chromeos/network/onc/mock_certificate_importer.h"
 
 namespace chromeos {
+namespace onc {
 
-MockCertificateHandler::MockCertificateHandler() {
+MockCertificateImporter::MockCertificateImporter() {
 }
 
-MockCertificateHandler::~MockCertificateHandler() {
+MockCertificateImporter::~MockCertificateImporter() {
 }
 
+}  // namespace onc
 }  // namespace chromeos