diff --git a/common/constants.h b/common/constants.h
index 776e726..fefd08c 100644
--- a/common/constants.h
+++ b/common/constants.h
@@ -59,6 +59,7 @@
 extern const char kPrefsP2PFirstAttemptTimestamp[];
 extern const char kPrefsP2PNumAttempts[];
 extern const char kPrefsPayloadAttemptNumber[];
+extern const char kPrefsPostInstallSucceeded[];
 extern const char kPrefsPreviousVersion[];
 extern const char kPrefsResumedUpdateFailures[];
 extern const char kPrefsRollbackVersion[];
@@ -96,6 +97,8 @@
 extern const char kPayloadPropertyUserAgent[];
 extern const char kPayloadPropertyPowerwash[];
 extern const char kPayloadPropertyNetworkId[];
+extern const char kPayloadPropertySwitchSlotOnReboot[];
+extern const char kPayloadPropertyRunPostInstall[];
 
 // A download source is any combination of protocol and server (that's of
 // interest to us when looking at UMA metrics) using which we may download