[android] Enable DOM distiller by default on development channels.

This enables the DOM distiller by default on dev and canary channel and
on local builds on Android.

BUG=319881

Review URL: https://codereview.chromium.org/185713012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@254820 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 254820