Remove ThreadHeap::m_threads

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 1200 matching lines @@
   m_safePointStackCopy.resize(slotCount);
   for (size_t i = 0; i < slotCount; ++i) {
     m_safePointStackCopy[i] = from[i];
   }
 }
 
 void ThreadState::addInterruptor(
     std::unique_ptr<BlinkGCInterruptor> interruptor) {
   ASSERT(checkThread());
   SafePointScope scope(BlinkGC::HeapPointersOnStack);
-  {
-    MutexLocker locker(m_heap->threadAttachMutex());
-    m_interruptors.push_back(std::move(interruptor));
-  }
+  m_interruptors.push_back(std::move(interruptor));
 }
 
 void ThreadState::registerStaticPersistentNode(
     PersistentNode* node,
     PersistentClearCallback callback) {
 #if defined(LEAK_SANITIZER)
   if (m_disabledStaticPersistentsRegistration)
     return;
 #endif
 
@@ skipping 26 matching lines @@
 void ThreadState::enterStaticReferenceRegistrationDisabledScope() {
   m_disabledStaticPersistentsRegistration++;
 }
 
 void ThreadState::leaveStaticReferenceRegistrationDisabledScope() {
   ASSERT(m_disabledStaticPersistentsRegistration);
   m_disabledStaticPersistentsRegistration--;
 }
 #endif
 
-void ThreadState::lockThreadAttachMutex() {
-  m_heap->threadAttachMutex().lock();
-}
-
-void ThreadState::unlockThreadAttachMutex() {
-  m_heap->threadAttachMutex().unlock();
-}
-
 void ThreadState::invokePreFinalizers() {
   ASSERT(checkThread());
   ASSERT(!sweepForbidden());
   TRACE_EVENT0("blink_gc", "ThreadState::invokePreFinalizers");
 
   double startTime = WTF::currentTimeMS();
   if (!m_orderedPreFinalizers.isEmpty()) {
     SweepForbiddenScope sweepForbidden(this);
     ScriptForbiddenIfMainThreadScope scriptForbidden;
 
@@ skipping 279 matching lines @@
     collectGarbage(BlinkGC::NoHeapPointersOnStack, BlinkGC::GCWithSweep,
                    BlinkGC::ForcedGC);
     size_t liveObjects = heap().heapStats().markedObjectSize();
     if (liveObjects == previousLiveObjects)
       break;
     previousLiveObjects = liveObjects;
   }
 }
 
 }  // namespace blink