CONSOLE WARNING: line 20: Calling Element.createShadowRoot() for an element which already hosts a shadow root is deprecated and will be removed in M63, around December 2017. See https://www.chromestatus.com/features/4668884095336448 for more details.
When we modify host children and get distributed nodes in nested ShadowDOM, distribution should occur from the host.

Adds a div to ShadowRoot.
PASS content.getDistributedNodes().length is 2
PASS content.getDistributedNodes().item(0) is div1
PASS content.getDistributedNodes().item(1) is addedDiv

Adds a div as fallback content, which should not be used.
PASS content.getDistributedNodes().length is 2
PASS content.getDistributedNodes().item(0) is div1
PASS content.getDistributedNodes().item(1) is addedDiv

Removes the first added div
PASS content.getDistributedNodes().length is 1
PASS content.getDistributedNodes().item(0) is div1

Removes the second added div
PASS content.getDistributedNodes().length is 1
PASS content.getDistributedNodes().item(0) is div1

PASS successfullyParsed is true

TEST COMPLETE