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

test/cctest/test-weaksets.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 after this flag is turned on globally
 #define V8_IMMINENT_DEPRECATION_WARNINGS
 
 #include <utility>
 
 #include "src/v8.h"
 
 #include "src/global-handles.h"
 #include "test/cctest/cctest.h"
+#include "test/cctest/heap/utils-inl.h"
 
 using namespace v8::internal;
 
 static Isolate* GetIsolateFrom(LocalContext* context) {
   return reinterpret_cast<Isolate*>((*context)->GetIsolate());
 }
 
 
 static Handle<JSWeakSet> AllocateJSWeakSet(Isolate* isolate) {
   Factory* factory = isolate->factory();
@@ skipping 195 matching lines @@
     JSWeakCollection::Set(weakset, keys[i], smi, hash);
   }
 
   // Force compacting garbage collection. The subsequent collections are used
   // to verify that key references were actually updated.
   CHECK(FLAG_always_compact);
   heap->CollectAllGarbage();
   heap->CollectAllGarbage();
   heap->CollectAllGarbage();
 }