Disable tough_canvas_cases on linux/android.

BUG=314380
NOTRY=True

Review URL: https://codereview.chromium.org/64643006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233849 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233849
Blink roll 161547:161575

http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog_blink.html?url=/trunk&range=161548:161575&mode=html
TBR=
BUG=

Review URL: https://codereview.chromium.org/64663003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233850 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233851 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233850
SVN changes up to revision 233851