enable omx_codec_unittest based on new omx engine BUG=none TEST=try bot
enable omx_codec_unittest based on new omx engine
BUG=none
TEST=try bot

Review URL: http://codereview.chromium.org/2397001

git-svn-id: http://src.chromium.org/svn/trunk/src@48741 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 54afef2d3cab5688c2e45f99d5b7ddb39b3869e5
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser