Revert a workaround commit for a Use-After-Free crash.

Revert a workaround commit r20158 for a Use-After-Free issue (http://crbug.com/244746) because a cleaner CL r207218 is landed.
URLRequestContext does not inherit SupportsWeakPtr now.

R=mmenke
BUG=244746

Review URL: https://chromiumcodereview.appspot.com/16870008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@207811 0039d316-1c4b-4281-b951-d872f2087c98
int SocketStream::DoBeforeConnectComplete(int result) {
  DCHECK_NE(ERR_IO_PENDING, result);

  if (result == OK)
    next_state_ = STATE_RESOLVE_PROXY;
  else
    next_state_ = STATE_CLOSE;

  return result;
}

int SocketStream::DoBeforeConnectComplete(int result) {
  DCHECK_NE(ERR_IO_PENDING, result);

  if (result == OK)
    next_state_ = STATE_RESOLVE_PROXY;
  else
    next_state_ = STATE_CLOSE;

  return result;
}
