am 998c6777: Merge "Never show overscroll if the page scrolls at all." into gingerbread

Merge commit '998c67774aa2260ed05a39df45d983feb72e683c' into gingerbread-plus-aosp

* commit '998c67774aa2260ed05a39df45d983feb72e683c':
  Never show overscroll if the page scrolls at all.