GitLab

Accumulating all the positions of the touch-events of a single touch-point
during its entire lifetime is not very useful. So instead, stop accumulating the
positions when the point leaves the manhattan square.

BUG=139175
TEST=none
TBR=sky@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10831043

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148750 0039d316-1c4b-4281-b951-d872f2087c98