Update V8 to version 3.22.6.

TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/25577004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226567 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226568 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 226567
SVN changes up to revision 226568