Oilpan: fix build after r173245.

Remove unused allocation of a TouchList object.

R=
BUG=363321

Review URL: https://codereview.chromium.org/264773015

git-svn-id: svn://svn.chromium.org/blink/trunk@173271 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Auto-rebaseline for r173258

http://src.chromium.org/viewvc/blink?view=revision&revision=173258

BUG=313438
TBR=rob.buis@samsung.com

Review URL: https://codereview.chromium.org/265183003

git-svn-id: svn://svn.chromium.org/blink/trunk@173272 bbb929c8-8fbe-4397-9dbb-9b2b20218538