Enabling Private Space Container in Launcher.

This CL adds the following:
1. Adds filtering and addition of Private Profile apps in main user
all apps recycler view
2. Enables decoration of Private Profile apps
3. Enables hiding Private Space container based upon a settings entry.

Flag: ACONFIG com.android.launcher3.Flags.enable_private_space DEVELOPMENT
Bug: 289223923
Test: Ran Launcher3 tests
Change-Id: I33dc55a3a39e75d3fc336ca6a488b282e2dd322c

src/com/android/launcher3/allapps/AllAppsGridAdapter.java

@@ -73,8 +73,9 @@ public class AllAppsGridAdapter<T extends Context & ActivityContext> extends
 
 
     public AllAppsGridAdapter(T activityContext, LayoutInflater inflater,
-            AlphabeticalAppsList apps, SearchAdapterProvider<?> adapterProvider) {
-        super(activityContext, inflater, apps, adapterProvider);
+            AlphabeticalAppsList apps, SearchAdapterProvider<?> adapterProvider,
+            PrivateSpaceHeaderViewController privateSpaceHeaderViewController) {
+        super(activityContext, inflater, apps, adapterProvider, privateSpaceHeaderViewController);
         mGridLayoutMgr = new AppsGridLayoutManager(mActivityContext);
         mGridLayoutMgr.setSpanSizeLookup(new GridSpanSizer());
         setAppsPerRow(activityContext.getDeviceProfile().numShownAllAppsColumns);