Add gtest to fix unit test compilation.

PiperOrigin-RevId: 450862787
diff --git a/rs_bindings_from_cc/importer_test.cc b/rs_bindings_from_cc/importer_test.cc
index 13d24c1..e4a406e 100644
--- a/rs_bindings_from_cc/importer_test.cc
+++ b/rs_bindings_from_cc/importer_test.cc
@@ -8,12 +8,14 @@
 #include <variant>
 #include <vector>
 
-#include "testing/base/public/gmock.h"
-#include "testing/base/public/gunit.h"
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
 #include "absl/status/status.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/string_view.h"
 #include "absl/types/span.h"
+#include "common/status_test_matchers.h"
+#include "common/test_utils.h"
 #include "rs_bindings_from_cc/bazel_types.h"
 #include "rs_bindings_from_cc/ir.h"
 #include "rs_bindings_from_cc/ir_from_cc.h"
@@ -32,7 +34,6 @@
 using ::testing::SizeIs;
 using ::testing::UnorderedElementsAre;
 using ::testing::VariantWith;
-using ::testing::status::StatusIs;
 
 std::optional<ItemId> DeclIdForRecord(const IR& ir, absl::string_view rs_name) {
   for (const Record* record : ir.get_items_if<Record>()) {