Commit 040c4db30d2905762710d132e20a79ca261eacc3

jbauman@chromium.org 2011-10-13T21:35:52

Cache currently-bound draw buffer. Avoids a hash table lookup BUG= TEST=webgl conformance tests Review URL: http://codereview.appspot.com/5261042 git-svn-id: https://angleproject.googlecode.com/svn/trunk@794 736b8ea6-26fd-11df-bfd4-992fa37f6226