buffet: Add State property to Manager BUG=chromium:356368 TEST=Modified buffet_BasicDBusAPI verifies that Get and GetAll work. Change-Id: I3af7cbbdee6d47405786420b0d00a71b0f883ec7 Reviewed-on: https://chromium-review.googlesource.com/192002 Tested-by: Christopher Wiley <wiley@chromium.org> Reviewed-by: Chris Sosa <sosa@chromium.org> Commit-Queue: Christopher Wiley <wiley@chromium.org>

diff --git a/buffet/manager.cc b/buffet/manager.cc
index 4daa9fc..e0a9b7a 100644
--- a/buffet/manager.cc
+++ b/buffet/manager.cc

@@ -28,9 +28,16 @@
                                   dbus_constants::kManagerUpdateStateMethod,
                                   base::Bind(&Manager::HandleUpdateState,
                                              base::Unretained(this)));
+  properties_.reset(new Properties(exported_object));
+  // TODO(wiley): Initialize all properties appropriately before claiming
+  //              the properties interface.
+  properties_->state_.SetValue("{}");
+  properties_->ClaimPropertiesInterface();
 }
 
 Manager::~Manager() {
+  // Prevent the properties object from making calls to the exported object.
+  properties_.reset(nullptr);
   // Unregister ourselves from the Bus.  This prevents the bus from calling
   // our callbacks in between the Manager's death and the bus unregistering
   // our exported object on shutdown.  Unretained makes no promises of memory
@@ -89,7 +96,8 @@
   }
 
   LOG(INFO) << "Received call to Manager.UpdateState()";
-  // TODO(wiley): Do something with these parameters to update state.
+  // TODO(wiley): Merge json state blobs intelligently.
+  properties_->state_.SetValue(json_state_fragment);
 
   // Send back our response.
   return dbus::Response::FromMethodCall(method_call);