hero transition is lost in Chrome ShadowDOM

[andriytyurnikov]

if hero hero-id elements are on different levels of ShadowDOM, transition fails in Chrome (while works fine in Firefox Developer edition). Not sure if it is element's issue, Chrome issue, or behavior by design.

[andriytyurnikov]

a little note here - core-style is used in element's source, so shim-shadowdom attribute isn't used to access /deep/ elements