Brent Vatne f8f5cb1fcf Fix content offset calculations when scrolling up
Summary:
The offset is cached so it doesn't need to calculate the entire height on each scroll, but the cached value was being thrown away when you scroll up -- this fixes that. Found this because it was breaking an infinite scroll view that depended on the contentOffset.y value reported from onScroll.
Closes https://github.com/facebook/react-native/pull/5278

Reviewed By: svcscm

Differential Revision: D2827556

Pulled By: dmmiller

fb-gh-sync-id: 0897b89de427cada7389113991444f57c970f980
2016-01-13 07:31:55 -08:00
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2016-01-06 07:05:33 -08:00