Handle split select rotation

- Update floatingTaskView, apply splitsSelectTranslation and splitPrimaryScorllOffest when rotating while in split select
- Moved getSplitSelectTranslation to RecentsView
- When in portrait, treat STAGE_POSITION_BOTTOM_OR_RIGHT as STAGE_POSITION_TOP_OR_LEFT in split translation calculation
- Apply splitsSelectTranslation for portrait grid too

Fix: 201721153
Test: manual
Change-Id: I768a3b15de4d434674058b274c368798f5852917

src/com/android/launcher3/touch/PortraitPagedViewHandler.java

@@ -261,8 +261,8 @@ public class PortraitPagedViewHandler implements PagedOrientationHandler {
     }
 
     @Override
-    public int getSplitTranslationDirectionFactor(int stagePosition) {
-        if (stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
+    public int getSplitTranslationDirectionFactor(int stagePosition, DeviceProfile deviceProfile) {
+        if (deviceProfile.isLandscape && stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
             return -1;
         } else {
             return 1;