This color conversion code is from the Chromium open source project available here:

http://code.google.com/chromium/

The code comes from svn revision 63840 on 2010-10-26.

It has been superseded upstream by libyuv (which is spawned off it). Bug 791941 is about
trying to replace this code with libyuv.

clang-cl-workaround.patch: Bug 1422368 - Work around a clang-cl unresolved symbol bug.
