Replace ENABLE(ASSERT) with DCHECK_IS_ON().

third_party/WebKit/Source/platform/heap/ThreadState.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 1224 matching lines @@
       ASSERT_NOT_REACHED();
   }
 }
 
 void ThreadState::prepareForThreadStateTermination() {
   ASSERT(checkThread());
   for (int i = 0; i < BlinkGC::NumberOfArenas; ++i)
     m_arenas[i]->prepareHeapForTermination();
 }
 
-#if ENABLE(ASSERT)
+#if DCHECK_IS_ON()
 BasePage* ThreadState::findPageFromAddress(Address address) {
   for (int i = 0; i < BlinkGC::NumberOfArenas; ++i) {
     if (BasePage* page = m_arenas[i]->findPageFromAddress(address))
       return page;
   }
   return nullptr;
 }
 #endif
 
 size_t ThreadState::objectPayloadSizeForTesting() {
@@ skipping 528 matching lines @@
     collectGarbage(BlinkGC::NoHeapPointersOnStack, BlinkGC::GCWithSweep,
                    BlinkGC::ForcedGC);
     size_t liveObjects = heap().heapStats().markedObjectSize();
     if (liveObjects == previousLiveObjects)
       break;
     previousLiveObjects = liveObjects;
   }
 }
 
 }  // namespace blink