Remove ThreadHeapMode

third_party/WebKit/Source/platform/heap/Heap.cpp

 /*
  * Copyright (C) 2013 Google Inc. 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
@@ skipping 238 matching lines @@
     // thread local GC asserts. We enter a safepoint while waiting for the
     // lock to avoid a dead-lock where another thread has already requested
     // GC.
     SafePointAwareMutexLocker locker(m_threadAttachMutex,
                                      BlinkGC::NoHeapPointersOnStack);
     thread->runTerminationGC();
     ASSERT(m_threads.contains(thread));
     m_threads.remove(thread);
     isLastThread = m_threads.isEmpty();
   }
-  // The last thread begin detached should be the owning thread, which would
-  // be the main thread for the mainThreadHeap and a per thread heap enabled
-  // thread otherwise.
-  if (isLastThread)
-    DCHECK(thread->threadHeapMode() == BlinkGC::PerThreadHeapMode ||
-           thread->isMainThread());
   if (thread->isMainThread())
     DCHECK_EQ(heapStats().allocatedSpace(), 0u);
   if (isLastThread)
     delete this;
 }
 
 bool ThreadHeap::park() {
   return m_safePointBarrier->parkOthers();
 }
 
@@ skipping 386 matching lines @@
   ProcessHeap::decreaseTotalMarkedObjectSize(m_stats.markedObjectSize());
 
   m_stats.reset();
   for (ThreadState* state : m_threads)
     state->resetHeapCounters();
 }
 
 ThreadHeap* ThreadHeap::s_mainThreadHeap = nullptr;
 
 }  // namespace blink