Removed funky Maybe constructor and made fields private.

test/cctest/test-mark-compact.cc

Index: test/cctest/test-mark-compact.cc
diff --git a/test/cctest/test-mark-compact.cc b/test/cctest/test-mark-compact.cc
index 64d995d95ad9c9668f54185d7ad7bb283cde80f5..0a257ed87d0d984fc3d46f16d60383fa188a6ea1 100644
--- a/test/cctest/test-mark-compact.cc
+++ b/test/cctest/test-mark-compact.cc
@@ -45,6 +45,7 @@
 #include "test/cctest/cctest.h"
 
 using namespace v8::internal;
+using v8::Just;
 
 
 TEST(MarkingDeque) {
@@ -167,9 +168,7 @@ TEST(MarkCompactCollector) {
 
   { HandleScope scope(isolate);
     Handle<String> func_name = factory->InternalizeUtf8String("theFunction");
-    v8::Maybe<bool> maybe = JSReceiver::HasOwnProperty(global, func_name);
-    CHECK(maybe.has_value);
-    CHECK(maybe.value);
+    CHECK(Just(true) == JSReceiver::HasOwnProperty(global, func_name));
     Handle<Object> func_value =
         Object::GetProperty(global, func_name).ToHandleChecked();
     CHECK(func_value->IsJSFunction());
@@ -187,9 +186,7 @@ TEST(MarkCompactCollector) {
 
   { HandleScope scope(isolate);
     Handle<String> obj_name = factory->InternalizeUtf8String("theObject");
-    v8::Maybe<bool> maybe = JSReceiver::HasOwnProperty(global, obj_name);
-    CHECK(maybe.has_value);
-    CHECK(maybe.value);
+    CHECK(Just(true) == JSReceiver::HasOwnProperty(global, obj_name));
     Handle<Object> object =
         Object::GetProperty(global, obj_name).ToHandleChecked();
     CHECK(object->IsJSObject());