Add FXIOS-14256 [Toolbar] Update Blur Views - Feature Flag (#31055)

Add feature flag for toolbar translucency refactor

Author: thatswinnie

firefox-ios/Client/FeatureFlags/NimbusFlaggableFeature.swift

@@ -63,6 +63,7 @@ enum NimbusFeatureFlagID: String, CaseIterable {
     case toolbarRefactor
     case toolbarSwipingTabs
     case toolbarTranslucency
+    case toolbarTranslucencyRefactor
     case toolbarMinimalAddressBar
     case toolbarMiddleButtonCustomization
     case tosFeature
@@ -196,6 +197,7 @@ struct NimbusFlaggableFeature: HasNimbusSearchBar {
                 .toolbarRefactor,
                 .toolbarSwipingTabs,
                 .toolbarTranslucency,
+                .toolbarTranslucencyRefactor,
                 .toolbarMinimalAddressBar,
                 .toolbarMiddleButtonCustomization,
                 .tosFeature,

firefox-ios/Client/Nimbus/NimbusFeatureFlagLayer.swift

@@ -166,6 +166,9 @@ final class NimbusFeatureFlagLayer: Sendable {
         case .toolbarTranslucency:
             return checkToolbarTranslucencyFeature(from: nimbus)
 
+        case .toolbarTranslucencyRefactor:
+            return checkToolbarTranslucencyRefactorFeature(from: nimbus)
+
         case .toolbarMinimalAddressBar:
             return checkToolbarMinimalAddressBarFeature(from: nimbus)
 
@@ -322,6 +325,11 @@ final class NimbusFeatureFlagLayer: Sendable {
         return config.translucency
     }
 
+    private func checkToolbarTranslucencyRefactorFeature(from nimbus: FxNimbus) -> Bool {
+        let config = nimbus.features.toolbarRefactorFeature.value()
+        return config.translucencyRefactor
+    }
+
     private func checkToolbarMinimalAddressBarFeature(from nimbus: FxNimbus) -> Bool {
         let config = nimbus.features.toolbarRefactorFeature.value()
         return config.minimalAddressBar

firefox-ios/nimbus-features/toolbarRefactorFeature.yaml

@@ -39,6 +39,11 @@ features:
           Enables translucency for toolbars.
         type: Boolean
         default: true
+      translucency-refactor:
+        description: >
+          Enables translucency refactor for toolbars.
+        type: Boolean
+        default: false
       minimal_address_bar:
         description: >
           Enables minimal address bar mode on scroll to ensure the url is always visible.
@@ -65,6 +70,7 @@ features:
           toolbar_update_hint: false
           swiping_tabs: true
           translucency: true
+          translucency-refactor: false
           minimal_address_bar: true
           middle_button_customization: true
           layout: version1
@@ -77,6 +83,7 @@ features:
           toolbar_update_hint: false
           swiping_tabs: true
           translucency: true
+          translucency-refactor: false
           minimal_address_bar: true
           middle_button_customization: true
           layout: version1