Set next page immediately on subsequent arrow/tab presses when navigating overivew.

This allows the user to scroll as quickly as they want.

Fix: 328749622
Test: manual
Flag: NONE
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:a9a11b47c3bff4d3ec4a4f300e12895d3235fe95)
Merged-In: I493841f11407e6fb9f15fd90b5a5e55fa4ed3ad3
Change-Id: I493841f11407e6fb9f15fd90b5a5e55fa4ed3ad3