Define DEV_URANDOM for posix

It seemed that Android, Linux and MacOS support /dev/random. Enable it for OS_POSIX.

BUG=393774
R=juberti@chromium.org

Review URL: https://codereview.chromium.org/392783005

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/libsrtp@284994 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
1 file changed
tree: 2ae3edb7731d1e93ab45d3913291a341d5301206
  1. config/
  2. srtp/
  3. .gitignore
  4. libsrtp.gyp
  5. README.chromium