mojo_js_standalone will quit after the last JSApp quits

I've also changed mojo_shell so that extra spaces in between app configuration arguments aren't turned into empty strings.

BUG=420243

Review URL: https://codereview.chromium.org/627093002

Cr-Commit-Position: refs/heads/master@{#298917}


CrOS-Libchrome-Original-Commit: b5334e7a527563ab6e96704325f8b5d53d8d791c
3 files changed
tree: 6d2b0699329086a5d871c4c317ea0eb275d07e22
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/