This should stop the random hangs due to chrome/app/chrome_dll_main.cc(616)] Check failed: PathService::Override(chrome::DIR_USER_DATA, user_data_dir)??
This should stop the random hangs due to chrome/app/chrome_dll_main.cc(616)] Check failed: PathService::Override(chrome::DIR_USER_DATA, user_data_dir)??

Revert 41369 - Linux: Pass userdatadir to the Zygote.

BUG=none
TEST=On Linux, "chrome enablelogging userdatadir=/tmp/foobar" writes renderer logs to chrome_debug.log in /tmp/foobar rather than in $XDG_CONFIG_HOME.
Review URL: http://codereview.chromium.org/885003

TBR=thestig@chromium.org

Review URL: http://codereview.chromium.org/848009

git-svn-id: http://src.chromium.org/svn/trunk/src@41518 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 6f6fc4405304741adce6c95ae2d67dbac4ded4dd
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