JPEGDecoder should use imageDecoder colorProfile helpers

JPEGDecoder should use imageDecoder colorProfile helpers
https://bugs.webkit.org/show_bug.cgi?id=76968

Reviewed by Adam Barth.

No new tests. Cover by existing tests, in particular:
  fast/images/ycbcr-with-cmyk-color-profile.html
  fast/images/gray-scale-jpeg-with-color-profile.html
  fast/images/cmyk-jpeg-with-color-profile.html
  fast/images/color-jpeg-with-color-profile.html

* platform/image-decoders/jpeg/JPEGImageDecoder.cpp: white-space removals via Xcode.
(WebCore::readColorProfile):  Use ImageDecoder.h color profile helper routines.
(WebCore::JPEGImageReader::JPEGImageReader):
(WebCore::JPEGImageReader::decode):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105859 268f45cc-cd09-0410-ab3c-d52691b4dbfc