Installer digests for Incremental installations.

Bug: 160605420
Test: atest ChecksumsTest
Change-Id: I9d46c218cccf87781e9b33711c4d02d94bf824f5
diff --git a/services/incremental/BinderIncrementalService.h b/services/incremental/BinderIncrementalService.h
index 1238498..0a89166 100644
--- a/services/incremental/BinderIncrementalService.h
+++ b/services/incremental/BinderIncrementalService.h
@@ -58,7 +58,9 @@
     binder::Status makeDirectories(int32_t storageId, const std::string& path,
                                    int32_t* _aidl_return) final;
     binder::Status makeFile(int32_t storageId, const std::string& path,
-                            const IncrementalNewFileParams& params, int32_t* _aidl_return) final;
+                            const IncrementalNewFileParams& params,
+                            const ::std::optional<::std::vector<uint8_t>>& content,
+                            int32_t* _aidl_return) final;
     binder::Status makeFileFromRange(int32_t storageId, const std::string& targetPath,
                                      const std::string& sourcePath, int64_t start, int64_t end,
                                      int32_t* _aidl_return) final;