Remove all M20 incompatible features in GPU blacklist.

So the ToT should never roll to this revision.  This is for merging back to M20 only.  Once I commit this, I'll revert it immediately.

BUG=134015
TEST=about:gpu and see gpu blacklisted on 2010 Macbook Air
R=kbr
Review URL: https://chromiumcodereview.appspot.com/10703008

git-svn-id: http://src.chromium.org/svn/trunk/deps/gpu/software_rendering_list@144530 4ff67af0-8c30-449e-8e8b-ad334ec8d88c