Remove debugging instrumentation in TouchActionFilter

Previously we added debugging instrumentation DumpWithoutCrashing() in
TouchActionFilter. It has been pointed out that this results in top
crashes without real crashes, which could suppress other crashes.

Since we have landed the CL for a few days and collected some data,
this CL removes the debugging instrumentation before dev release.

TBR=tdresser@chromium.org

Bug: 869375
Change-Id: Iedd93b7393a65e6fb9b8aef40a0a554465ec859d
Reviewed-on: https://chromium-review.googlesource.com/1172726
Reviewed-by: Xida Chen <xidachen@chromium.org>
Commit-Queue: Xida Chen <xidachen@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#582640}(cherry picked from commit 33435161ac4c3672000d4375da19093889e4faf6)
Reviewed-on: https://chromium-review.googlesource.com/1173063
Cr-Commit-Position: refs/branch-heads/3521@{#4}
Cr-Branched-From: d6179b49f9ac994d10e56e18e35c551879ecc4be-refs/heads/master@{#582483}
2 files changed