Remove ImageSource::bytesDecodedToDetermineProperties() and fallout

Source/core/platform/graphics/FrameData.cpp

 /*
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2008 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 35 matching lines @@
 {
     clear(true);
 }
 
 bool FrameData::clear(bool clearMetadata)
 {
     if (clearMetadata)
         m_haveMetadata = false;
 
     m_orientation = DefaultImageOrientation;
+    m_frameBytes = 0;
 
     if (m_frame) {
         m_frame.clear();
 
         return true;
     }
     return false;
 }
 
 } // namespace WebCore