Introduce a kill-switch for shipping features.

test/cctest/test-api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 7687 matching lines @@
 
   FlagAndPersistent object_a, object_b;
 
   {
     v8::HandleScope handle_scope(iso);
     Local<Object> a(v8::Object::New(iso));
     Local<Object> b(v8::Object::New(iso));
     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);
     }
   }
 
   object_a.flag = false;
   object_b.flag = false;
   object_a.handle.SetWeak(&object_a, &ResetUseValueAndSetFlag);
   object_b.handle.SetWeak(&object_b, &ResetUseValueAndSetFlag);
   if (!global_gc) {
     object_a.handle.MarkIndependent();
     object_b.handle.MarkIndependent();
     CHECK(object_b.handle.IsIndependent());
   }
   if (global_gc) {
-    CcTest::heap()->CollectAllGarbage(TestHeap::Heap::kNoGCFlags);
+    CcTest::heap()->CollectAllAvailableGarbage();
   } else {
     CcTest::heap()->CollectGarbage(i::NEW_SPACE);
   }
   CHECK(object_a.flag);
   CHECK(object_b.flag);
 }
 
 
 THREADED_TEST(ResetWeakHandle) {
   ResetWeakHandle(false);
@@ skipping 16647 matching lines @@
   v8::HandleScope scope(CcTest::isolate());
   RandomLengthOneByteResource* r =
       new RandomLengthOneByteResource(i::String::kMaxLength);
   v8::Local<v8::String> str = v8::String::NewExternal(CcTest::isolate(), r);
   CHECK(!str.IsEmpty());
   v8::TryCatch try_catch;
   v8::Local<v8::String> result = v8::String::Concat(str, str);
   CHECK(result.IsEmpty());
   CHECK(!try_catch.HasCaught());
 }