Single-finger multi-tap: complete immediately rather than after a delay.

We will not be implementing single-finger triple-tap for now.

Bug: 136131815
Test: atest GestureManifoldTest TouchExplorerTest  AccessibilityGestureDetectorTest
Change-Id: I8a9bd62963bab86ba26bfa46e6f871105dca6d35
1 file changed