Revert 42646 - Register internal plugins.
Revert 42646 - Register internal plugins.

BUG=none
TEST=none (but Gears should continue working on Windows)

Review URL: http://codereview.chromium.org/1336002

TBR=viettrungluu@chromium.org
Review URL: http://codereview.chromium.org/1355002

git-svn-id: http://src.chromium.org/svn/trunk/src@42653 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 1130ec3ba4a730c4b428597528b2c1261e87af58
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