Revert of [heap] Fix CompactionSpace test and move to unittests

test/unittests/heap/spaces-unittest.cc

-// Copyright 2017 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "src/heap/heap-inl.h"
-#include "src/heap/spaces-inl.h"
-#include "src/isolate.h"
-#include "test/unittests/test-utils.h"
-
-namespace v8 {
-namespace internal {
-
-typedef TestWithIsolate SpacesTest;
-
-TEST_F(SpacesTest, CompactionSpaceMerge) {
-  Heap* heap = i_isolate()->heap();
-  OldSpace* old_space = heap->old_space();
-  EXPECT_TRUE(old_space != NULL);
-
-  CompactionSpace* compaction_space =
-      new CompactionSpace(heap, OLD_SPACE, NOT_EXECUTABLE);
-  EXPECT_TRUE(compaction_space != NULL);
-  EXPECT_TRUE(compaction_space->SetUp());
-
-  // Cannot loop until "Available()" since we initially have 0 bytes available
-  // and would thus neither grow, nor be able to allocate an object.
-  const int kNumObjects = 10;
-  const int kNumObjectsPerPage =
-      compaction_space->AreaSize() / kMaxRegularHeapObjectSize;
-  const int kExpectedPages =
-      (kNumObjects + kNumObjectsPerPage - 1) / kNumObjectsPerPage;
-  for (int i = 0; i < kNumObjects; i++) {
-    HeapObject* object =
-        compaction_space->AllocateRawUnaligned(kMaxRegularHeapObjectSize)
-            .ToObjectChecked();
-    heap->CreateFillerObjectAt(object->address(), kMaxRegularHeapObjectSize,
-                               ClearRecordedSlots::kNo);
-  }
-  int pages_in_old_space = old_space->CountTotalPages();
-  int pages_in_compaction_space = compaction_space->CountTotalPages();
-  EXPECT_EQ(kExpectedPages, pages_in_compaction_space);
-  old_space->MergeCompactionSpace(compaction_space);
-  EXPECT_EQ(pages_in_old_space + pages_in_compaction_space,
-            old_space->CountTotalPages());
-
-  delete compaction_space;
-}
-
-}  // namespace internal
-}  // namespace v8