Hide dev options v1 under feature flag

 - Cutover to DevelopmentSettingsDashboardFragment
 - Add dev_option_v1 feature flag

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: I2ff7b5c55f1f27cd24b4e276d3d81a73f67dcf88
diff --git a/src/com/android/settings/SettingsActivity.java b/src/com/android/settings/SettingsActivity.java
index 973c216..1202d13 100644
--- a/src/com/android/settings/SettingsActivity.java
+++ b/src/com/android/settings/SettingsActivity.java
@@ -832,16 +832,16 @@
 
         final boolean showDev = DevelopmentSettingsEnabler.isDevelopmentSettingsEnabled(this)
                 && !um.hasUserRestriction(UserManager.DISALLOW_DEBUGGING_FEATURES);
-        final boolean useDevOptionV2 = Settings.DevelopmentSettingsDashboardActivity.isEnabled();
+        final boolean useDevOptionV1 = Settings.DevelopmentSettingsActivity.isEnabled();
         // Enable old Dev option if v2 is disabled
         somethingChanged = setTileEnabled(new ComponentName(packageName,
                         Settings.DevelopmentSettingsActivity.class.getName()),
-                showDev && !useDevOptionV2, isAdmin)
+                showDev && useDevOptionV1, isAdmin)
                 || somethingChanged;
         // Enable new Dev option if v2 is enable
         somethingChanged = setTileEnabled(new ComponentName(packageName,
                         Settings.DevelopmentSettingsDashboardActivity.class.getName()),
-                showDev && useDevOptionV2, isAdmin)
+                showDev && !useDevOptionV1, isAdmin)
                 || somethingChanged;
 
         // Enable/disable backup settings depending on whether the user is admin.