Remove OS(IOS) and OS(MAC_OS_X) guards.

Source/wtf/FastMalloc.cpp

 // Copyright (c) 2005, 2007, Google Inc.
 // All rights reserved.
 // Copyright (C) 2005, 2006, 2007, 2008, 2009, 2011 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:
 // 
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
@@ skipping 4148 matching lines @@
 
 #undef malloc
 #undef free
 #undef realloc
 #undef calloc
 
 extern "C" {
 malloc_introspection_t jscore_fastmalloc_introspection = { &FastMallocZone::enumerate, &FastMallocZone::goodSize, &FastMallocZone::check, &FastMallocZone::print,
     &FastMallocZone::log, &FastMallocZone::forceLock, &FastMallocZone::forceUnlock, &FastMallocZone::statistics
 
-#if OS(IOS) || __MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
+#if __MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
     , 0 // zone_locked will not be called on the zone unless it advertises itself as version five or higher.
 #endif
-#if OS(IOS) || __MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
+#if __MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
     , 0, 0, 0, 0 // These members will not be used unless the zone advertises itself as version seven or higher.
 #endif
 
     };
 }
 
 FastMallocZone::FastMallocZone(TCMalloc_PageHeap* pageHeap, TCMalloc_ThreadCache** threadHeaps, TCMalloc_Central_FreeListPadded* centralCaches, PageHeapAllocator<Span>* spanAllocator, PageHeapAllocator<TCMalloc_ThreadCache>* pageHeapAllocator)
     : m_pageHeap(pageHeap)
     , m_threadHeaps(threadHeaps)
     , m_centralCaches(centralCaches)
@@ skipping 18 matching lines @@
 void FastMallocZone::init()
 {
     static FastMallocZone zone(pageheap, &thread_heaps, static_cast<TCMalloc_Central_FreeListPadded*>(central_cache), &span_allocator, &threadheap_allocator);
 }
 
 #endif // OS(DARWIN)
 
 } // namespace WTF
 
 #endif // FORCE_SYSTEM_MALLOC