buffet: Add device state manager
Added StateManager class to buffet and all the internals to
load vendor-provided state definition fragments, apply state
property defaults, expose the state property values over D-Bus
to be updated by daemons (using Buffet.UpdateState method) and
sent the current device state to GCD server as part of device
draft provided during device registration.
BUG=chromium:415364
TEST=FEATURES=test emerge-link buffet
Change-Id: I78e470c98d906064dfbe925614613ee6a91ff3cf
Reviewed-on: https://chromium-review.googlesource.com/218743
Tested-by: Alex Vakulenko <avakulenko@chromium.org>
Reviewed-by: Christopher Wiley <wiley@chromium.org>
Commit-Queue: Alex Vakulenko <avakulenko@chromium.org>
diff --git a/buffet/states/error_codes.h b/buffet/states/error_codes.h
new file mode 100644
index 0000000..2298741
--- /dev/null
+++ b/buffet/states/error_codes.h
@@ -0,0 +1,25 @@
+// Copyright 2014 The Chromium OS 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 BUFFET_STATES_ERROR_CODES_H_
+#define BUFFET_STATES_ERROR_CODES_H_
+
+namespace buffet {
+namespace errors {
+namespace state {
+
+// Error domain for state definitions.
+extern const char kDomain[];
+
+// State-specific error codes.
+extern const char kPackageNameMissing[];
+extern const char kPropertyNameMissing[];
+extern const char kPropertyNotDefined[];
+extern const char kPropertyRedefinition[];
+
+} // namespace state
+} // namespace errors
+} // namespace buffet
+
+#endif // BUFFET_STATES_ERROR_CODES_H_
