Update V8 in Chromium to version 1.2.5.1 to get the improved compilation cache histograms.
Update V8 in Chromium to version 1.2.5.1 to get the improved
compilation cache histograms.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/115769

git-svn-id: http://src.chromium.org/svn/trunk/src@16869 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 16f53dea45c6243a14f923fe6df39d3aa5f61748
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