diff --git a/update_attempter.h b/update_attempter.h
index 880e975..3db4097 100644
--- a/update_attempter.h
+++ b/update_attempter.h
@@ -259,6 +259,8 @@
   FRIEND_TEST(UpdateAttempterTest, InstallSetsStatusIdle);
   FRIEND_TEST(UpdateAttempterTest, MarkDeltaUpdateFailureTest);
   FRIEND_TEST(UpdateAttempterTest, PingOmahaTest);
+  FRIEND_TEST(UpdateAttempterTest, ProcessingDoneInstallError);
+  FRIEND_TEST(UpdateAttempterTest, ProcessingDoneUpdateError);
   FRIEND_TEST(UpdateAttempterTest, ReportDailyMetrics);
   FRIEND_TEST(UpdateAttempterTest, RollbackNotAllowed);
   FRIEND_TEST(UpdateAttempterTest, RollbackAfterInstall);
@@ -284,6 +286,11 @@
   // parameters used in the current update attempt.
   uint32_t GetErrorCodeFlags();
 
+  // ActionProcessorDelegate methods |ProcessingDone()| internal helpers.
+  void ProcessingDoneInternal(const ActionProcessor* processor, ErrorCode code);
+  void ProcessingDoneUpdate(const ActionProcessor* processor, ErrorCode code);
+  void ProcessingDoneInstall(const ActionProcessor* processor, ErrorCode code);
+
   // CertificateChecker::Observer method.
   // Report metrics about the certificate being checked.
   void CertificateChecked(ServerToCheck server_to_check,