Update activity control pref usage

The activity control boolean pref has been replaced with a enum flag.
Update the usage in Assistant settings.

Bug: b/124934418
Test: Manual Test
Change-Id: I648128163e701fcea9dc38e73e8734511c0f863a
Reviewed-on: https://chromium-review.googlesource.com/c/1480817
Commit-Queue: Yue Li <updowndota@chromium.org>
Reviewed-by: Xiaohui Chen <xiaohuic@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#634754}

chrome/browser/resources/settings/google_assistant_page/google_assistant_page.js

@@ -12,6 +12,28 @@ const DspHotwordState = {
   OFF: 2,
 };
 
+/**
+ * Indicates user's activity control consent status.
+ *
+ * Note: This should be kept in sync with ash::mojom::ConsentStatus in
+ * ash/public/interfaces/voice_interaction_controller.mojom
+ * @enum {number}
+ */
+const ConsentStatus = {
+  // The status is unknown.
+  kUnknown: 0,
+
+  // The user accepted activity control access.
+  kActivityControlAccepted: 1,
+
+  // The user is not authorized to give consent.
+  kUnauthorized: 2,
+
+  // The user's consent information is not found. This is typically the case
+  // when consent from the user has never been requested.
+  kNotFound: 3,
+};
+
 /**
  * @fileoverview 'settings-google-assistant-page' is the settings page
  * containing Google Assistant settings.
@@ -83,6 +105,8 @@ Polymer({
   observers: [
     'onPrefsChanged_(prefs.settings.voice_interaction.hotword.enabled.value)',
     'onPrefsChanged_(prefs.settings.voice_interaction.hotword.always_on.value)',
+    `onPrefsChanged_(
+      prefs.settings.voice_interaction.activity_control.consent_status.value)`,
   ],
 
   /** @private {?settings.GoogleAssistantBrowserProxy} */
@@ -153,8 +177,9 @@ Polymer({
     this.shouldShowVoiceMatchSettings_ =
         loadTimeData.getBoolean('voiceMatchEnabled') &&
         this.getPref('settings.voice_interaction.hotword.enabled.value') &&
-        this.getPref(
-            'settings.voice_interaction.activity_control.accepted.value');
+        (this.getPref(
+          'settings.voice_interaction.activity_control.consent_status.value') ==
+            ConsentStatus.kActivityControlAccepted);
   },
 
   /** @private */