diff --git a/delta_performer.h b/delta_performer.h
index a484096..0bdf7ca 100644
--- a/delta_performer.h
+++ b/delta_performer.h
@@ -15,6 +15,7 @@
 #include "update_engine/file_writer.h"
 #include "update_engine/install_plan.h"
 #include "update_engine/omaha_hash_calculator.h"
+#include "update_engine/system_state.h"
 #include "update_engine/update_metadata.pb.h"
 
 namespace chromeos_update_engine {
@@ -36,8 +37,11 @@
   static const uint64_t kDeltaManifestSizeSize;
   static const char kUpdatePayloadPublicKeyPath[];
 
-  DeltaPerformer(PrefsInterface* prefs, InstallPlan* install_plan)
+  DeltaPerformer(PrefsInterface* prefs,
+                 SystemState* system_state,
+                 InstallPlan* install_plan)
       : prefs_(prefs),
+        system_state_(system_state),
         install_plan_(install_plan),
         fd_(-1),
         kernel_fd_(-1),
@@ -212,9 +216,15 @@
   // update. Returns false otherwise.
   bool PrimeUpdateState();
 
+  // Sends UMA statistics for the given error code.
+  void SendUMAStat(ActionExitCode code);
+
   // Update Engine preference store.
   PrefsInterface* prefs_;
 
+  // Global context of the system.
+  SystemState* system_state_;
+
   // Install Plan based on Omaha Response.
   InstallPlan* install_plan_;