Add classpath files in incremental D8 benchmark

Fixes: b/280759424
Change-Id: I143cb512ab0da5a674a42c599d5c21555b371813
diff --git a/src/test/java/com/android/tools/r8/benchmarks/appdumps/AppDumpBenchmarkBuilder.java b/src/test/java/com/android/tools/r8/benchmarks/appdumps/AppDumpBenchmarkBuilder.java
index ecfb059..57fa80d 100644
--- a/src/test/java/com/android/tools/r8/benchmarks/appdumps/AppDumpBenchmarkBuilder.java
+++ b/src/test/java/com/android/tools/r8/benchmarks/appdumps/AppDumpBenchmarkBuilder.java
@@ -215,6 +215,7 @@
                     programOutputs.add(
                         TestBase.testForD8(environment.getTemp(), Backend.DEX)
                             .addProgramFiles(programFile)
+                            .addClasspathFiles(dump.getProgramArchive())
                             .addLibraryFiles(dump.getLibraryArchive())
                             .setMinApi(dumpProperties.getMinApi())
                             .setIntermediate(true)