Allows Kiosk mode app to store display preferences.

Some kiosk app provides the UI to edit the display preferences and
the edit result should be stored.

R=oshima@chromium.org

Review URL: https://codereview.chromium.org/24923002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226109 0039d316-1c4b-4281-b951-d872f2087c98
browser_tab_contents is not compiled on Android so !#ifdef ANDROID makes no sense.

BUG=265523
TEST=none

Review URL: https://codereview.chromium.org/25323004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226110 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226110