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Adjust the defaults behaviour of scroll views. (#9679)

* Adjust the defaults behaviour of scroll views.

Now, primary scroll views scroll by default. Others only scroll if necessary.

* apply suggested changes
I
Ian Hickson committed
89856c0e5bb897a89fcfe0229d47af4d4956c5f4
Parent: f739e9e
Committed by GitHub <noreply@github.com> on 5/2/2017, 4:14:50 PM