Roll GRIT to r151.

TBR=newt@chromium.org
BUG=none

Review URL: https://codereview.chromium.org/158753002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250174 0039d316-1c4b-4281-b951-d872f2087c98
Disable OobeTest.NewUser.

BUG=342478

Review URL: https://codereview.chromium.org/135583005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250176 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250177 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 250177