Make WebViews clickable DO NOT MERGE

* Makes the side-scrollable again
* Required after making them non-long-clickable

Requires companion change in WebView, to allow touch events while
clickable or long clickable (it had been requiring both)

Bug: 3036477
Change-Id: I4cae46d047f825d2aab08d254287855b187e9207
2 files changed