[cctest] Move most heap related tests to test/cctest/heap and clean wrt IWYU

test/cctest/heap/test-spaces.cc

 // Copyright 2011 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 16 matching lines @@
 
 // TODO(mythria): Remove this define after this flag is turned on globally
 #define V8_IMMINENT_DEPRECATION_WARNINGS
 
 #include <stdlib.h>
 
 #include "src/base/platform/platform.h"
 #include "src/snapshot/snapshot.h"
 #include "src/v8.h"
 #include "test/cctest/cctest.h"
-#include "test/cctest/heap-tester.h"
+#include "test/cctest/heap/heap-tester.h"
+#include "test/cctest/heap/utils-inl.h"
 
 namespace v8 {
 namespace internal {
 
 #if 0
 static void VerifyRegionMarking(Address page_start) {
 #ifdef ENABLE_CARDMARKING_WRITE_BARRIER
   Page* p = Page::FromAddress(page_start);
 
   p->SetRegionMarks(Page::kAllRegionsCleanMarks);
@@ skipping 874 matching lines @@
     new_space->RemoveInlineAllocationObserver(&observer2);
 
     CHECK_EQ(observer1.count(), 32);
     CHECK_EQ(observer2.count(), 28);
   }
   isolate->Dispose();
 }
 
 }  // namespace internal
 }  // namespace v8