Removing a bunch of unused platform code.

Source/WebCore/platform/mac/SharedBufferMac.mm

 /*
  * Copyright (C) 2006 Apple Computer, 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 31 matching lines @@
 
 - (id)initWithSharedBuffer:(SharedBuffer*)buffer;
 @end
 
 @implementation WebCoreSharedBufferData
 
 + (void)initialize
 {
 #if !USE(WEB_THREAD)
     JSC::initializeThreading();
-#if PLATFORM(QT) && USE(QTKIT)
-    WTF::initializeMainThread();
-#else
     WTF::initializeMainThreadToProcessMainThread();
 #endif
-#endif // !USE(WEB_THREAD)
     WebCoreObjCFinalizeOnMainThread(self);
 }
 
 - (void)dealloc
 {
     if (WebCoreObjCScheduleDeallocateOnMainThread([WebCoreSharedBufferData class], self))
         return;
     
     [super dealloc];
 }
@@ skipping 39 matching lines @@
 
 CFDataRef SharedBuffer::createCFData()
 {
     if (m_cfData) {
         CFRetain(m_cfData.get());
         return m_cfData.get();
     }
     
     return (CFDataRef)RetainPtr<WebCoreSharedBufferData>(AdoptNS, [[WebCoreSharedBufferData alloc] initWithSharedBuffer:this]).leakRef();
 }
-#if !(PLATFORM(QT) && USE(QTKIT))
-PassRefPtr<SharedBuffer> SharedBuffer::createWithContentsOfFile(const String& filePath)
-{
-    NSData *resourceData = [NSData dataWithContentsOfFile:filePath];
-    if (resourceData) 
-        return SharedBuffer::wrapNSData(resourceData);
-    return 0;
-}
-#endif
 }