Update v8 to version 2.2.1.
Update v8 to version 2.2.1.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/2868040

git-svn-id: http://src.chromium.org/svn/trunk/src@51246 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: f7236adfae0ca0f8f9556d4908ea16362a74c540
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser