Enable one-handed mode gestural in QuickStep

Handling swipe-down/swipe-up gestural in device bottom area
for one-handed mode

1) The regsion is larger than gesture navigationbar view
2) One handed gestural in quickstep only active on NO_BUTTON, TWO_BUTTONS mode
3) One handed gestural only support on portrait mode

Bug: 150747547
Bug: 154189137
Bug: 156988988

Test: make and install
Test: manual enable one handed mode and swipe down to trigger
Test: manual start one handed and rotate device

Change-Id: I7b2447bfb2fe4082c95176b62934b98077b84920
(cherry picked from commit 7d375e31fe)

quickstep/src/com/android/quickstep/RotationTouchHelper.java

@@ -188,6 +188,10 @@ public class RotationTouchHelper implements
         return mOrientationTouchTransformer.touchInAssistantRegion(ev);
     }
 
+    public boolean touchInOneHandedModeRegion(MotionEvent ev) {
+        return mOrientationTouchTransformer.touchInOneHandedModeRegion(ev);
+    }
+
     /**
      * Updates the regions for detecting the swipe up/quickswitch and assistant gestures.
      */