Bug 2030021, part 5 - Add a nimbus controlled preference to control annotation deference - r=timhuang

Differential Revision: https://phabricator.services.mozilla.com/D298552

modules/libpref/init/StaticPrefList.yaml

@@ -17210,6 +17210,13 @@
   value: true
   mirror: always
 
+# Allows content to defer the annotation url classification features
+# completion until the data is being handled.
+- name: privacy.trackingprotection.defer_annotation.enabled
+  type: bool
+  value: false
+  mirror: always
+
 # Whether to spoof user locale to English (used as part of Resist
 # Fingerprinting).
 # 0 - will prompt

toolkit/components/nimbus/FeatureManifest.yaml

@@ -5423,6 +5423,18 @@ partitioned-cookie-attribute:
         branch: default
         pref: "network.cookie.CHIPS.affectsTCP"
 
+trackingProtectionExperimentation:
+  description: Experimental controls for tracking protection behavior
+  owner: [email protected]
+  hasExposure: false
+  variables:
+    deferAnnotationEnabled:
+      description: Whether to defer tracking protection classification annotation
+      type: boolean
+      setPref:
+        branch: default
+        pref: "privacy.trackingprotection.defer_annotation.enabled"
+
 auto-pip:
   description: "Automatic Picture-in-Picture"
   owner: [email protected]