Revert "Plumb in crprocess instead of RunCommand to allow quiet operation."

shell/subcmds/shell_cmd.py

Index: shell/subcmds/shell_cmd.py
diff --git a/shell/subcmds/shell_cmd.py b/shell/subcmds/shell_cmd.py
index 538ebf008f7790a9c7c41f28fc52d3196b75b77d..4c3c550252b067c92399082989ee9802babb4e71 100644
--- a/shell/subcmds/shell_cmd.py
+++ b/shell/subcmds/shell_cmd.py
@@ -93,7 +93,6 @@ class ShellCmd(subcmd.ChromiteCmd):
 
     # Enter the chroot if needed...
     if not cros_lib.IsInsideChroot():
-      self._oper.Info('ENTERING THE CHROOT')
       utils.EnterChroot(chroot_config, (self, 'Run'), raw_argv)
     else:
       # We'll put CWD as src/scripts when running the command.  Since everyone
@@ -121,8 +120,5 @@ class ShellCmd(subcmd.ChromiteCmd):
           env.update(user_env)
 
       # Don't show anything special for errors; we'll let the shell report them.
-      # TODO(sjg) We don't use RunScript() here since this may become an
-      # interactive shell. Would prefer that this becomes its own command to
-      # avoid this problem.
       cros_lib.RunCommand(argv, cwd=cwd, env=env, error_ok=True,
                           ignore_sigint=True)