Ensure DEFINE_STATIC_LOCAL can be used before wtf threading is initialized

third_party/WebKit/Source/wtf/StdLibExtras.h

Index: third_party/WebKit/Source/wtf/StdLibExtras.h
diff --git a/third_party/WebKit/Source/wtf/StdLibExtras.h b/third_party/WebKit/Source/wtf/StdLibExtras.h
index 4a9ca69300d543541bd90d6f6a35d359bd29e9b8..26ba1d8d02958298aacfc73daea5743ccbbce201 100644
--- a/third_party/WebKit/Source/wtf/StdLibExtras.h
+++ b/third_party/WebKit/Source/wtf/StdLibExtras.h
@@ -43,13 +43,14 @@ class WTF_EXPORT 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();
   }