Pepper API implementation for output protection.

BUG=256538
R=cpu@chromium.org, dalecurtis@chromium.org, dmichael@chromium.org, marcheu@chromium.org, wuchengli@chromium.org

Review URL: https://codereview.chromium.org/24039002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@225849 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 225849