[fenix] For https://github.com/mozilla-mobile/fenix/issues/15007 - Puts swipe to delete behind a feature flag (https://github.com/mozilla-mobile/fenix/pull/15009)

app/src/main/java/org/mozilla/fenix/FeatureFlags.kt

@@ -40,4 +40,9 @@ object FeatureFlags {
      * Enables downloads with external download managers.
      */
     const val externalDownloadManager = true
+
+    /**
+     * Enables swipe to delete in bookmarks
+     */
+    val bookmarkSwipeToDelete = Config.channel.isNightlyOrDebug
 }

app/src/main/java/org/mozilla/fenix/library/bookmarks/BookmarkView.kt

@@ -13,6 +13,7 @@ import kotlinx.android.synthetic.main.component_bookmark.view.*
 import mozilla.appservices.places.BookmarkRoot
 import mozilla.components.concept.storage.BookmarkNode
 import mozilla.components.support.base.feature.UserInteractionHandler
+import org.mozilla.fenix.FeatureFlags
 import org.mozilla.fenix.NavGraphDirections
 import org.mozilla.fenix.R
 import org.mozilla.fenix.library.LibraryPageView
@@ -135,7 +136,9 @@ class BookmarkView(
             interactor.onRequestSync()
         }
 
-        BookmarkTouchHelper(interactor).attachToRecyclerView(view.bookmark_list)
+        if (FeatureFlags.bookmarkSwipeToDelete) {
+            BookmarkTouchHelper(interactor).attachToRecyclerView(view.bookmark_list)
+        }
     }
 
     fun update(state: BookmarkFragmentState) {