Make the srcs and exclude_srcs properties configurable

Bug: 358377461
Bug: 342006386
Test: Presubmits
Change-Id: I21c20254a3ad3e75dd401ab807eb57ddbbeac047
diff --git a/cc/fuzz.go b/cc/fuzz.go
index 92f2c5e..d9e221b 100644
--- a/cc/fuzz.go
+++ b/cc/fuzz.go
@@ -373,7 +373,7 @@
 		}
 
 		if targetFramework == fuzz.AFL {
-			fuzzBin.baseCompiler.Properties.Srcs = append(fuzzBin.baseCompiler.Properties.Srcs, ":aflpp_driver", ":afl-compiler-rt")
+			fuzzBin.baseCompiler.Properties.Srcs.AppendSimpleValue([]string{":aflpp_driver", ":afl-compiler-rt"})
 			module.fuzzer.Properties.FuzzFramework = fuzz.AFL
 		}
 	})