Added texture wrap demo.
BUG=26099
TEST=Run texture_wrap executable. You should see three quads, each with a different texture wrapping mode.
Review URL: http://codereview.chromium.org/552012

git-svn-id: http://src.chromium.org/svn/trunk/src/third_party/gles2_book@36394 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
3 files changed