Removing a bunch of unused platform code.

Source/WebCore/platform/cf/SharedBufferCF.cpp

 /*
  * Copyright (C) 2008, 2010 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
@@ skipping 22 matching lines @@
 namespace WebCore {
 
 SharedBuffer::SharedBuffer(CFDataRef cfData)
     : m_size(0)
     , m_cfData(cfData)
 {
 }
 
 // Mac is a CF platform but has an even more efficient version of this method,
 // so only use this version for non-Mac
-#if !PLATFORM(MAC) && !(PLATFORM(QT) && USE(QTKIT))
+#if !PLATFORM(MAC)
 CFDataRef SharedBuffer::createCFData()
 {
     if (m_cfData) {
         CFRetain(m_cfData.get());
         return m_cfData.get();
     }
 
     // Internal data in SharedBuffer can be segmented. We need to get the contiguous buffer.
     const Vector<char>& contiguousBuffer = buffer();
     return CFDataCreate(0, reinterpret_cast<const UInt8*>(contiguousBuffer.data()), contiguousBuffer.size());
@@ skipping 98 matching lines @@
         return 0;
 
     if (m_dataArray.size() != 1)
         return 0;
 
     return reinterpret_cast<const char*>(CFDataGetBytePtr(m_dataArray.at(0).get()));
 }
 #endif
 
 }