Fork SecuritySettings page and hide behind a feature flag.

Bug: 32953042
Test: robotests
Change-Id: Ibbb4221eef87f09ccd024146517707680180a100
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index 9314952..d21a061 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -68,6 +68,7 @@
     public static class AccessibilityContrastSettingsActivity extends SettingsActivity { /* empty */ }
     public static class AccessibilityDaltonizerSettingsActivity extends SettingsActivity { /* empty */ }
     public static class SecuritySettingsActivity extends SettingsActivity { /* empty */ }
+    public static class SecuritySettingsActivityV2 extends SettingsActivity { /* empty */ }
     public static class UsageAccessSettingsActivity extends SettingsActivity { /* empty */ }
     public static class LocationSettingsActivity extends SettingsActivity { /* empty */ }
     public static class PrivacySettingsActivity extends SettingsActivity { /* empty */ }