Roll Chromeos system_api (new methods in cryptohome API)

BUG=244472
TBR=

Review URL: https://codereview.chromium.org/190553003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255753 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255754 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255754