Merge changes from topic "state-supplier" into ub-launcher3-master

* changes:
  Translate recents slightly while dragging after pausing
  Two-zone model: swipe up from nav bar vs above it
  Change LauncherState to Supplier<LauncherState> in tests

src/com/android/launcher3/Workspace.java

@@ -3255,7 +3255,8 @@ public class Workspace extends PagedView<WorkspacePageIndicator>
         return mOverlayShown;
     }
 
-    void moveToDefaultScreen() {
+    /** Calls {@link #snapToPage(int)} on the {@link #DEFAULT_PAGE}, then requests focus on it. */
+    public void moveToDefaultScreen() {
         int page = DEFAULT_PAGE;
         if (!workspaceInModalState() && getNextPage() != page) {
             snapToPage(page);