Introduce a kill-switch for shipping features.

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index 3ed4dc6091c540bb5475afd5bd67dcfe1b722f47..0920178785e1664112f32c7c375c8c306ba7df64 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -7705,7 +7705,7 @@ static void ResetWeakHandle(bool global_gc) {
     object_a.handle.Reset(iso, a);
     object_b.handle.Reset(iso, b);
     if (global_gc) {
-      CcTest::heap()->CollectAllGarbage(TestHeap::Heap::kNoGCFlags);
+      CcTest::heap()->CollectAllAvailableGarbage();
     } else {
       CcTest::heap()->CollectGarbage(i::NEW_SPACE);
     }
@@ -7721,7 +7721,7 @@ static void ResetWeakHandle(bool global_gc) {
     CHECK(object_b.handle.IsIndependent());
   }
   if (global_gc) {
-    CcTest::heap()->CollectAllGarbage(TestHeap::Heap::kNoGCFlags);
+    CcTest::heap()->CollectAllAvailableGarbage();
   } else {
     CcTest::heap()->CollectGarbage(i::NEW_SPACE);
   }