Reworked gradient shader to no longer explicitly set gl_FragColor or return prematurely.
This should fix failing linux buildbot, and should play nicer with programs that don't use the gl_FragColor global, or that have multiple stages.
Also disabled debug printing from revision 4445.
Review URL: https://codereview.appspot.com/6345063

git-svn-id: http://skia.googlecode.com/svn/trunk@4454 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed