Ensure DEFINE_STATIC_LOCAL can be used before wtf threading is initialized

third_party/WebKit/Source/wtf/StdLibExtras.h

 /*
  * Copyright (C) 2008 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 25 matching lines @@
 #if DCHECK_IS_ON()
 #include "wtf/Noncopyable.h"
 #include "wtf/Threading.h"
 
 class WTF_EXPORT StaticLocalVerifier {
   WTF_MAKE_NONCOPYABLE(StaticLocalVerifier);
 
  public:
   StaticLocalVerifier()
       : m_safelyInitialized(WTF::isBeforeThreadCreated()),
-        m_thread(WTF::currentThread()) {}
+        m_thread(WTF::internal::currentThreadSyscall()) {}
 
   bool isNotRacy() {
     // Make sure that this 1) is safely initialized, 2) keeps being called
     // on the same thread, or 3) is called within
     // AtomicallyInitializedStatic (i.e. with a lock held).
-    return m_safelyInitialized || m_thread == WTF::currentThread() ||
+    return m_safelyInitialized ||
+           m_thread == WTF::internal::currentThreadSyscall() ||
            WTF::isAtomicallyInitializedStaticMutexLockHeld();
   }
 
  private:
   bool m_safelyInitialized;
   ThreadIdentifier m_thread;
 };
 #endif
 
 namespace blink {
@@ skipping 175 matching lines @@
 enum NotNullTag { NotNull };
 inline void* operator new(size_t, NotNullTag, void* location) {
   DCHECK(location);
   return location;
 }
 
 using WTF::bitwiseCast;
 using WTF::safeCast;
 
 #endif  // WTF_StdLibExtras_h