Webgl conformance test expectations update

Fix the incorrect test names.

BUG=325884
TEST=gpu linux bots
TBR=kbr@chromium.org,bajones@chromium.org

Review URL: https://codereview.chromium.org/105783002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@238808 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 238808