Add enterprise policy to exempt hosts from Certificate Transparency

components/certificate_transparency/pref_names.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_CERTIFICATE_TRANSPARENCY_PREF_NAMES_H_
+#define COMPONENTS_CERTIFICATE_TRANSPARENCY_PREF_NAMES_H_
+
+namespace certificate_transparency {
+namespace prefs {
+
+// The set of hosts (as URLBlacklist-syntax filters) for which Certificate
+// Transparency is required to be present.
+extern const char kCTRequiredHosts[];
+
+// The set of hosts (as URLBlacklist-syntax filters) for which Certificate
+// Transparency information is allowed to be absent, even if it would
+// otherwise be required (e.g. as part of security policy).
+extern const char kCTExcludedHosts[];
+
+}  // namespace prefs
+}  // namespace certificate_transparency
+
+#endif  // COMPONENTS_CERTIFICATE_TRANSPARENCY_PREF_NAMES_H_