Use experimentation framework parameters for location sensitivity.
Added a private API for this.

BUG=164227
TEST=No

Review URL: https://chromiumcodereview.appspot.com/22382006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@216847 0039d316-1c4b-4281-b951-d872f2087c98
7 files changed