Remove defunct mac_gpu_retina configuration from presubmit scripts.

mac_gpu_retina_triggered_tests is now triggered by mac_gpu instead.

BUG=351499
TBR=bsalomon@google.com,jamesr@chromium.org,piman@chromium.org

Review URL: https://codereview.chromium.org/195573004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256490 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256490
ui: Fix -Wabsolute-value warnings.

Fixes some minor truncation.

BUG=351479

Review URL: https://codereview.chromium.org/195793002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256491 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256491
Blink roll 168937:168950

http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog_blink.html?url=/trunk&range=168938:168950&mode=html
TBR=
BUG=

Review URL: https://codereview.chromium.org/195953002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256492 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@256493 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 256493