Removing a bunch of unused platform code.

Source/WebCore/platform/SharedBuffer.cpp

 /*
  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2009-2010. 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 309 matching lines @@
 #if USE(NETWORK_CFDATA_ARRAY_CALLBACK)
     ASSERT(maxSegmentedSize <= position);
     position -= maxSegmentedSize;
     return copySomeDataFromDataArray(someData, position);
 #else
     ASSERT_NOT_REACHED();
     return 0;
 #endif
 }
 
-#if !USE(CF) || PLATFORM(QT)
+#if !USE(CF)
 
 inline void SharedBuffer::clearPlatformData()
 {
 }
 
 inline void SharedBuffer::maybeTransferPlatformData()
 {
 }
 
 inline bool SharedBuffer::hasPlatformData() const
@@ skipping 28 matching lines @@
     const UChar* d = string.characters();
     WTF::Unicode::ConversionResult result = WTF::Unicode::convertUTF16ToUTF8(&d, d + length, &p, p + buffer.size(), true);
     if (result != WTF::Unicode::conversionOK)
         return 0;
 
     buffer.shrink(p - buffer.data());
     return SharedBuffer::adoptVector(buffer);
 }
 
 } // namespace WebCore