Move CPU() macro to it's own header from wtf/Platform.h

Source/core/platform/image-decoders/bmp/BMPImageReader.h

 /*
  * Copyright (c) 2008, 2009, Google 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef BMPImageReader_h
 #define BMPImageReader_h
 
 #include <stdint.h>
 #include "core/platform/image-decoders/ImageDecoder.h"
+#include "wtf/CPU.h"
 
 namespace WebCore {
 
     // This class decodes a BMP image.  It is used in the BMP and ICO decoders,
     // which wrap it in the appropriate code to read file headers, etc.
     class BMPImageReader {
         WTF_MAKE_FAST_ALLOCATED;
     public:
         // Read a value from |data[offset]|, converting from little to native
         // endianness.
@@ skipping 300 matching lines @@
         // ICOs store a 1bpp "mask" immediately after the main bitmap image data
         // (and, confusingly, add its height to the biHeight value in the info
         // header, thus doubling it).  This variable tracks whether we have such
         // a mask and if we've started decoding it yet.
         AndMaskState m_andMaskState;
     };
 
 } // namespace WebCore
 
 #endif