Remove unused includes from core/platform .cpp files

Source/core/platform/graphics/ImageSource.cpp

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2007 Alp Toker <alp.toker@collabora.co.uk>
  * Copyright (C) 2008, 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 12 matching lines @@
  * 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.
  */
 
 #include "config.h"
 #include "core/platform/graphics/ImageSource.h"
 
 #include "core/platform/image-decoders/ImageDecoder.h"
 
-#include "core/platform/NotImplemented.h"
 #include "core/platform/PlatformMemoryInstrumentation.h"
 #include "core/platform/graphics/ImageOrientation.h"
 
 #include "core/platform/graphics/chromium/DeferredImageDecoder.h"
 
 namespace WebCore {
 
 ImageSource::ImageSource(ImageSource::AlphaOption alphaOption, ImageSource::GammaAndColorProfileOption gammaAndColorProfileOption)
     : m_alphaOption(alphaOption)
     , m_gammaAndColorProfileOption(gammaAndColorProfileOption)
@@ skipping 139 matching lines @@
     return m_decoder->frameBytesAtIndex(index);
 }
 
 void ImageSource::reportMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
 {
     MemoryClassInfo info(memoryObjectInfo, this, PlatformMemoryTypes::Image);
     info.addMember(m_decoder, "decoder");
 }
 
 }