Use rvalue reference instead of ExtensionBuilder::pass()

extensions/common/test_util.cc

Index: extensions/common/test_util.cc
diff --git a/extensions/common/test_util.cc b/extensions/common/test_util.cc
index 9a9312a3fc15aaa57da75fd186bba8e64e9d29ff..6def1b9550a4e53be0d14620e4cf89a3613db98a 100644
--- a/extensions/common/test_util.cc
+++ b/extensions/common/test_util.cc
@@ -13,7 +13,7 @@
 namespace extensions {
 namespace test_util {
 
-ExtensionBuilder& BuildExtension(ExtensionBuilder& builder) {
+ExtensionBuilder& BuildExtension(ExtensionBuilder builder) {
   return builder
          .SetManifest(DictionaryBuilder()
                       .Set("name", "Test extension")
@@ -21,7 +21,7 @@ ExtensionBuilder& BuildExtension(ExtensionBuilder& builder) {
                       .Set("manifest_version", 2));
 }
 
-ExtensionBuilder& BuildApp(ExtensionBuilder& builder) {
+ExtensionBuilder& BuildApp(ExtensionBuilder builder) {
   return builder.SetManifest(
       DictionaryBuilder()
           .Set("name", "Test extension")