Fix coordinate space for touch pointer events

Consider frame scale for calculating coordinates
of touch pointer events.

TBR=nzolghadr@chromium.org

(cherry picked from commit 735fa061d0f531bd0704c4c368d59edc1c1fea3a)
(cherry picked from commit 1478ec50aeb48fe9a10e51576a07cbe01d4a095f)

Bug: 809106
Change-Id: I5503583cd8c0e8b41b7e17fd59170a6f1dff7fa1
Reviewed-on: https://chromium-review.googlesource.com/914690
Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Commit-Queue: Navid Zolghadr <nzolghadr@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#536813}
Reviewed-on: https://chromium-review.googlesource.com/931902
Reviewed-by: Navid Zolghadr <nzolghadr@chromium.org>
Cr-Commit-Position: refs/branch-heads/3325@{#548}
Cr-Branched-From: bc084a8b5afa3744a74927344e304c02ae54189f-refs/heads/master@{#530369}
2 files changed