GTTF: Increase the limit for QPC drift.
GTTF: Increase the limit for QPC drift.

Also update the DCHECK to use an absolute
value of the skew for comparison. It could
be negative.

TEST=base_unittests
BUG=none

Review URL: http://codereview.chromium.org/3083002

git-svn-id: http://src.chromium.org/svn/trunk/src@54191 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: bfc0a6a6e1c6846284a28e40a2aa0dc9933e2019
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser