Move Chrome OS switches to chromeos/chromeos_switches.cc

Take them out of chrome/common/chrome_switches.cc

BUG=239626
TEST=compiles
TBR=sky@chromium.org

Review URL: https://chromiumcodereview.appspot.com/14820030

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@199347 0039d316-1c4b-4281-b951-d872f2087c98
39 files changed