Revert of Changed scavenge GC to collect unmodified references

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 6518 matching lines @@
   FlagAndPersistent object_a, object_b;
 
   intptr_t big_heap_size;
 
   {
     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 (interlinked &&
-        !v8::internal::FLAG_scavenge_reclaim_unmodified_objects) {
+    if (interlinked) {
       a->Set(v8_str("x"), b);
       b->Set(v8_str("x"), a);
     }
     if (global_gc) {
       CcTest::heap()->CollectAllGarbage();
     } else {
       CcTest::heap()->CollectGarbage(i::NEW_SPACE);
     }
     // We are relying on this creating a big flag array and reserving the space
     // up front.
     v8::Handle<Value> big_array = CompileRun("new Array(50000)");
-    if (!v8::internal::FLAG_scavenge_reclaim_unmodified_objects)
-      a->Set(v8_str("y"), big_array);
+    a->Set(v8_str("y"), big_array);
     big_heap_size = CcTest::heap()->SizeOfObjects();
   }
 
   object_a.flag = false;
   object_b.flag = false;
   object_a.handle.SetWeak(&object_a, &SetFlag,
                           v8::WeakCallbackType::kParameter);
   object_b.handle.SetWeak(&object_b, &SetFlag,
                           v8::WeakCallbackType::kParameter);
   CHECK(!object_b.handle.IsIndependent());
@@ skipping 15294 matching lines @@
   timeout_thread.Join();
 }
 
 
 TEST(EstimatedContextSize) {
   v8::Isolate* isolate = CcTest::isolate();
   v8::HandleScope scope(isolate);
   LocalContext env;
   CHECK(50000 < env->EstimatedSize());
 }