Create version 2 of InstalledAppDetails

- this is the first step for converting InstalledAppDetails into
DashboardFragment
- add a feature flag to determine whether to show the new installed app
detail page.
- decouple the fragment from AppInfoBase: extends from
SettingsPreferenceFragment directly and copy all codes from
AppInfoBase.

Bug: 69384089
Test: make RunSettingsRoboTests
Change-Id: If1ab5b216620eaba1d6bde20e65e7a602931fd94

src/com/android/settings/applications/manageapplications/ManageApplications.java

@@ -50,6 +50,7 @@ import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.text.TextUtils;
 import android.util.ArraySet;
+import android.util.FeatureFlagUtils;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
@@ -95,6 +96,8 @@ import com.android.settings.applications.InstalledAppDetails;
 import com.android.settings.applications.NotificationApps;
 import com.android.settings.applications.UsageAccessDetails;
 import com.android.settings.applications.WriteSettingsDetails;
+import com.android.settings.applications.AppInfoDashboardFragment;
+import com.android.settings.core.FeatureFlags;
 import com.android.settings.core.InstrumentedPreferenceFragment;
 import com.android.settings.dashboard.SummaryLoader;
 import com.android.settings.fuelgauge.HighPowerDetail;
@@ -538,7 +541,13 @@ public class ManageApplications extends InstrumentedPreferenceFragment
             // process ahead of time, to avoid a long load of data when user clicks on a managed
             // app. Maybe when they load the list of apps that contains managed profile apps.
             default:
-                startAppInfoFragment(InstalledAppDetails.class, R.string.application_info_label);
+                if (FeatureFlagUtils.isEnabled(getContext(), FeatureFlags.APP_INFO_V2)) {
+                    startAppInfoFragment(
+                            AppInfoDashboardFragment.class, R.string.application_info_label);
+                } else {
+                    startAppInfoFragment(
+                            InstalledAppDetails.class, R.string.application_info_label);
+                }
                 break;
         }
     }