Remove a bunch of OS(MACOSX) code

sky/engine/wtf/ThreadingPthreads.cpp

 /*
  * Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com)
  * Copyright (C) 2011 Research In Motion Limited. 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
@@ skipping 28 matching lines @@
 #include "wtf/PassOwnPtr.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/ThreadIdentifierDataPthreads.h"
 #include "wtf/ThreadSpecific.h"
 #include "wtf/ThreadingPrimitives.h"
 #include "wtf/WTFThreadData.h"
 #include "wtf/dtoa.h"
 #include "wtf/dtoa/cached-powers.h"
 #include <errno.h>
 
-#if !COMPILER(MSVC)
 #include <limits.h>
 #include <sched.h>
 #include <sys/time.h>
-#endif
-
-#if OS(MACOSX)
-#include <objc/objc-auto.h>
-#endif
 
 namespace WTF {
 
 class PthreadState {
     WTF_MAKE_FAST_ALLOCATED;
 public:
     enum JoinableState {
         Joinable, // The default thread state. The thread can be joined on.
 
         Joined, // Somebody waited on this thread to exit and this thread finally exited. This state is here because there can be a
@@ skipping 89 matching lines @@
 {
     ASSERT(!identifierByPthreadHandle(pthreadHandle));
     MutexLocker locker(threadMapMutex());
     static ThreadIdentifier identifierCount = 1;
     threadMap().add(identifierCount, adoptPtr(new PthreadState(pthreadHandle)));
     return identifierCount++;
 }
 
 void initializeCurrentThreadInternal(const char* threadName)
 {
-#if OS(MACOSX)
-    pthread_setname_np(threadName);
-
-    // All threads that potentially use APIs above the BSD layer must be registered with the Objective-C
-    // garbage collector in case API implementations use garbage-collected memory.
-    objc_registerThreadWithCollector();
-#endif
-
     ThreadIdentifier id = identifierByPthreadHandle(pthread_self());
     ASSERT(id);
     ThreadIdentifierData::initialize(id);
 }
 
 void threadDidExit(ThreadIdentifier threadID)
 {
     MutexLocker locker(threadMapMutex());
     PthreadState* state = threadMap().get(threadID);
     ASSERT(state);
@@ skipping 149 matching lines @@
 
 void ThreadCondition::broadcast()
 {
     int result = pthread_cond_broadcast(&m_condition);
     ASSERT_UNUSED(result, !result);
 }
 
 } // namespace WTF
 
 #endif // USE(PTHREADS)