Remove base::StringValue

tools/clang/value_cleanup/tests/list-value-append-original.cc

Index: tools/clang/value_cleanup/tests/list-value-append-original.cc
diff --git a/tools/clang/value_cleanup/tests/list-value-append-original.cc b/tools/clang/value_cleanup/tests/list-value-append-original.cc
index 806da661b335e1d66013f484a2d8349aea81ce10..adebcf49561da0257fb0bf89c27659c3adf0054f 100644
--- a/tools/clang/value_cleanup/tests/list-value-append-original.cc
+++ b/tools/clang/value_cleanup/tests/list-value-append-original.cc
@@ -29,7 +29,7 @@ void F() {
   list.Append(new base::Value(true));
   list.Append(new base::Value(static_cast<unsigned char>(1.0)));
   list.Append(new base::Value(double{3}));
-  list.Append(new base::StringValue("abc"));
+  list.Append(new base::Value("abc"));
 
   list.Append(ReturnsUniquePtr().release());
   Thing thing;