Reenable linux_aura on the main builders. (Again).

We upgraded the eu-strip binary so that it can deal with binaries that
are more than two gigabytes large. This should fix the crash on the
Google Chrome Linux builder, which was the only bot to break last night.

BUG=319075,125106,303342,318961
NOTRY=True

Review URL: https://codereview.chromium.org/138033023

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245737 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 245737