Generalize 'fast accessor' tests to work with --always-opt.

test/cctest/test-api-accessors.cc

Index: test/cctest/test-api-accessors.cc
diff --git a/test/cctest/test-api-accessors.cc b/test/cctest/test-api-accessors.cc
index a8de43fbc4e5914b9ce2838b3a4260ac1e0577f9..cda16cdbcbce8c27997dbc4b3be0153e9f3ce569 100644
--- a/test/cctest/test-api-accessors.cc
+++ b/test/cctest/test-api-accessors.cc
@@ -28,8 +28,6 @@ v8::experimental::FastAccessorBuilder* FastAccessor(v8::Isolate* isolate) {
 
 
 TEST(FastAccessors) {
-  if (i::FLAG_always_opt) return;
-
   v8::Isolate* isolate = CcTest::isolate();
   v8::HandleScope scope(isolate);
   LocalContext env;