Consolidate all wrappers used for testing.

- Add the wrapper package and move all wrappers to the wrapper package.
- Get rid of some wrapper interface/impl implementation and have a
wrapper class directly.

Bug: 65634579
Test: make RunSettingsRoboTests
Change-Id: Ic757d8f7bacfa7a034c7e692205bc1dc4b0e1de1

src/com/android/settings/applications/RecentAppsPreferenceController.java

@@ -42,6 +42,7 @@ import com.android.settings.Utils;
 import com.android.settings.core.PreferenceControllerMixin;
 import com.android.settingslib.applications.ApplicationsState;
 import com.android.settingslib.core.AbstractPreferenceController;
+import com.android.settingslib.wrapper.PackageManagerWrapper;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -143,7 +144,7 @@ public class RecentAppsPreferenceController extends AbstractPreferenceController
         refreshUi(mCategory.getContext());
         // Show total number of installed apps as See all's summary.
         new InstalledAppCounter(mContext, InstalledAppCounter.IGNORE_INSTALL_REASON,
-                new PackageManagerWrapperImpl(mContext.getPackageManager())) {
+                new PackageManagerWrapper(mContext.getPackageManager())) {
             @Override
             protected void onCountComplete(int num) {
                 if (mHasRecentApps) {