Revert Linux parts of r249384: "Pull GN r249300"

It seems to have broken the AOSP bots by un-reverting r248986, and it doesn't
look like the underlying issue has been fixed since.

TBR=brettw@chromium.org
BUG=none
NOTRY=TRUE
NOTREECHECKS=TRUE

Review URL: https://codereview.chromium.org/147983012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@249396 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 249396