Update V8 to version 3.22.8.

TBR=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/25996005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227049 0039d316-1c4b-4281-b951-d872f2087c98
Update .DEPS.git

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227050 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 227049
SVN changes up to revision 227050