Comment #7 on issue 15785 by tha...@chromium.org: Sites not loading images  
and displaying broken icon
http://code.google.com/p/chromium/issues/detail?id=15785

The problem with
http://picrevisions.s3.cdn.pmnw.net/pictures/4a59207b3cfd3/1/thumb_604.jpg  
is
that it uses colorspace JCS_CMYK (== 4), but base/gfx/jpeg_codec.cc  
contains:

   switch (cinfo.jpeg_color_space) {
     case JCS_GRAYSCALE:
     case JCS_RGB:
     case JCS_YCbCr:
       cinfo.out_color_space = JCS_RGB;
       break;
     case JCS_CMYK:
     case JCS_YCCK:
     default:
       // Mozilla errors out on these color spaces, so I presume that the  
jpeg
       // library can't do automatic color space conversion for them. We  
don't
       // care about these anyway.
       return false;
   }

I guess that comment is a lie :-)

I don't know how many jpegs use cmyk color, but I believe that could be the  
cause of
a lot of those "broken image" problems.

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