Switch back to building the Native Client plugin on all platforms now that we've resolved the Windows build issue.
Switch back to building the Native Client plugin on all platforms now that
we've resolved the Windows build issue.

TBR=noelallen

Review URL: http://codereview.chromium.org/5986018

git-svn-id: http://src.chromium.org/svn/trunk/src@70593 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 0d5a6f8320376798e60337cf55ccc76862e8cc3f
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