Revert a temporary workaround for issue 310479, which led to TSan v2 slowdown on the bots.
The bots have llvm-symbolizer in PATH now, so it's ok to use -gline-tables-only again.

BUG=310479
TBR=timurrrr@chromium.org

Review URL: https://codereview.chromium.org/39663002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230689 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230689