Correct picture-in-picture setting behavior for managed profile.

- Show picture-in-picture setting in the app info page for managed
profile.
- Navigate to work app setting instead of non-work app setting on
tapping setting icon from picture-in-picture window. This requires
correctly processing passed-in UserHandle to fetch the right package
info.

Bug: 71592457
Test: make RunSettingsRoboTests
Change-Id: Id3dd04e88a57ae3d8c319c17615992637128589b

src/com/android/settings/applications/appinfo/PictureInPictureDetailPreferenceController.java

@@ -20,7 +20,6 @@ import android.content.Context;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.os.UserHandle;
-import android.os.UserManager;
 import android.support.annotation.VisibleForTesting;
 import android.support.v7.preference.Preference;
 import android.util.Log;
@@ -44,9 +43,6 @@ public class PictureInPictureDetailPreferenceController extends AppInfoPreferenc
 
     @Override
     public int getAvailabilityStatus() {
-        if (UserManager.get(mContext).isManagedProfile()) {
-            return DISABLED_FOR_USER;
-        }
         return hasPictureInPictureActivites() ? AVAILABLE : DISABLED_FOR_USER;
     }