Send pointerrawmove for touch event path

Enable pointerrawmove events for touch event
path as well.

Bug: 882908
Change-Id: I263b6dfdd4cccf0fb1fcfbe0bb5581411b5f5e79
Reviewed-on: https://chromium-review.googlesource.com/1219967
Reviewed-by: Ella Ge <eirage@chromium.org>
Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Commit-Queue: Navid Zolghadr <nzolghadr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#591368}