Make extensions::DictionaryBuilder and extensions::ListValue unmovable.

extensions/common/value_builder_unittest.cc

Index: extensions/common/value_builder_unittest.cc
diff --git a/extensions/common/value_builder_unittest.cc b/extensions/common/value_builder_unittest.cc
index 7c474511b23bd20029b81d8bc08dd9f99263d50f..1f1c14e1abdaea74d97f13bab3da7b206208ae4a 100644
--- a/extensions/common/value_builder_unittest.cc
+++ b/extensions/common/value_builder_unittest.cc
@@ -20,9 +20,8 @@ TEST(ValueBuilderTest, Basic) {
   scoped_ptr<base::DictionaryValue> settings(new base::DictionaryValue);
 
   ASSERT_FALSE(settings->GetList("permissions", nullptr));
-  settings = DictionaryBuilder()
-                 .Set("permissions", std::move(permission_list))
-                 .Build();
+  settings =
+      DictionaryBuilder().Set("permissions", permission_list.Build()).Build();
   base::ListValue* list_value;
   ASSERT_TRUE(settings->GetList("permissions", &list_value));