Updates to WebGL conformance expectations and command line options to allow 1.0.2 to run on the bots

BUG=323736,322815
R=kbr@chromium.org

Review URL: https://codereview.chromium.org/90033002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237453 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237453