Move the Sudden Motion Sensor library into third_party.

BUG=118913
TEST=manual (see instructions at http://code.google.com/p/chromium/issues/detail?id=44654#c11)

Review URL: https://chromiumcodereview.appspot.com/9844020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@129588 0039d316-1c4b-4281-b951-d872f2087c98