Revert r144460 "Remove the linux-only CR_SOURCE_ROOT environment variable override of base::DIR_SOURCE_ROOT."

CR_SOURCE_ROOT is used in practice by linux user(s), plural still to be
determined, mostly for ChromeOS related development.

R=willchan@chromium.org
BUG=
TEST=


Review URL: https://chromiumcodereview.appspot.com/10808048

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148621 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: 3766ed1ca06a9a561c57085c8f8d276dea9b974e
1 file changed
tree: a164e2f8d47d5d91ffe90233b2524031094d4e68
  1. base/
  2. build/
  3. dbus/
  4. ipc/
  5. testing/
  6. third_party/