Checkpoint towards core profile support.

1) Stop calling glDisable for removed state

2) Use new GLSL names for texture sampling functions.
Review URL: https://codereview.chromium.org/12330181

git-svn-id: http://skia.googlecode.com/svn/trunk@7908 2bbb7eff-a529-9590-31e7-b0007b416f81
4 files changed