Remove ThreadHeapMode

third_party/WebKit/Source/modules/webdatabase/DatabaseThread.cpp

 /*
  * Copyright (C) 2007, 2008, 2013 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 42 matching lines @@
   ASSERT(m_openDatabaseSet.isEmpty());
   ASSERT(!m_thread);
 }
 
 DEFINE_TRACE(DatabaseThread) {}
 
 void DatabaseThread::start() {
   ASSERT(isMainThread());
   if (m_thread)
     return;
-  m_thread = WebThreadSupportingGC::create("WebCore: Database",
-                                           BlinkGC::PerThreadHeapMode);
+  m_thread = WebThreadSupportingGC::create("WebCore: Database");
   m_thread->postTask(BLINK_FROM_HERE,
                      crossThreadBind(&DatabaseThread::setupDatabaseThread,
                                      wrapCrossThreadPersistent(this)));
 }
 
 void DatabaseThread::setupDatabaseThread() {
   m_thread->initialize();
   m_transactionCoordinator = new SQLTransactionCoordinator();
 }
 
@@ skipping 93 matching lines @@
     MutexLocker lock(m_terminationRequestedMutex);
     ASSERT(!m_terminationRequested);
   }
 #endif
   // WebThread takes ownership of the task.
   m_thread->postTask(BLINK_FROM_HERE,
                      crossThreadBind(&DatabaseTask::run, std::move(task)));
 }
 
 }  // namespace blink