Disable HostDriven_SyncTest.testDisableAndEnableSync

This is failing on the android debug builder
http://build.chromium.org/p/chromium.linux/buildstatus?builder=Android%20Tests%20%28dbg%29&number=18942

I am not able to figure out which cl caused this, but it started here:
http://build.chromium.org/p/chromium.linux/builders/Android%20Tests%20%28dbg%29/builds/18939

Filed issue 348951 to track this

Review URL: https://codereview.chromium.org/177903011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254746 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254746