Revert 249038 "Blink roll 166433:166502"

This broke GPU bots with assertions in inspector.
BUG=341111

> Blink roll 166433:166502
> 
> http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog_blink.html?url=/trunk&range=166434:166502&mode=html
> TBR=
> BUG=
> 
> Review URL: https://codereview.chromium.org/138793007

TBR=eseidel@chromium.org

Review URL: https://codereview.chromium.org/147353013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249057 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249057
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249058 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249058