Replicate sandbox flags for OOPIF (Chromium part 2).

* Remove old versions of createChildFrame.
* Add browser tests.

Related CLs:
Chromium part 1: https://codereview.chromium.org/837283003/
Blink part 1: https://codereview.chromium.org/793493003/
Blink part 2: https://codereview.chromium.org/838903002/

BUG=426512

Review URL: https://codereview.chromium.org/797813006

Cr-Commit-Position: refs/heads/master@{#313384}


CrOS-Libchrome-Original-Commit: f832a2f6df39d1c9d0e0a759d21b273fee95f537
2 files changed
tree: 1d30eaca4121fc5f4186224601cec05c11e4e917
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/