this move file is failing really often on some buildbots, I added some code to retry on failure.
this move file is failing really often on some buildbots, I added some
code to retry on failure.

Review URL: http://codereview.chromium.org/6052

git-svn-id: http://src.chromium.org/svn/trunk/src@2783 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: f4ed7896fd2967d74b5badf6655919dbed119196
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