Update V8 to 2.4.5.
Update V8 to 2.4.5.

Review URL: http://codereview.chromium.org/3461022

git-svn-id: http://src.chromium.org/svn/trunk/src@60452 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 622526ec0286cd23707430ae32f460bad637e43c
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