diff --git a/delta_performer.h b/delta_performer.h
index fd234a2..a57788d 100644
--- a/delta_performer.h
+++ b/delta_performer.h
@@ -130,7 +130,7 @@
   // unavailable; it returns ErrorCode::kSignedDeltaPayloadExpectedError if the
   // public key is available but the delta payload doesn't include a signature.
   ErrorCode VerifyPayload(const std::string& update_check_response_hash,
-                               const uint64_t update_check_response_size);
+                          const uint64_t update_check_response_size);
 
   // Reads from the update manifest the expected sizes and hashes of the target
   // kernel and rootfs partitions. These values can be used for applied update
@@ -276,6 +276,12 @@
   bool PerformBsdiffOperation(
       const DeltaArchiveManifest_InstallOperation& operation,
       bool is_kernel_partition);
+  bool PerformSourceCopyOperation(
+      const DeltaArchiveManifest_InstallOperation& operation,
+      bool is_kernel_partition);
+  bool PerformSourceBsdiffOperation(
+      const DeltaArchiveManifest_InstallOperation& operation,
+      bool is_kernel_partition);
 
   // Returns true if the payload signature message has been extracted from
   // |operation|, false otherwise.