Don't send touch move events within the slop region in Aura.

This brings Aura into line with Android behaviour.

BUG=334040
TEST=TouchEventQueueTest.*Suppression*

Review URL: https://codereview.chromium.org/163983004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251400 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251400
Docserver: Disable links for the incomplete docs sets, leaving just Extensions,
Apps, and NaCL, so that we can launch what we have now.

TBR=mkearney@chromium.org

Review URL: https://codereview.chromium.org/167573002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251401 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251401