[Hotword] Sync Audio History pref every 24 hours, when opening chrome://settings and . . .

chrome/browser/ui/webui/options/browser_options_handler.h

Index: chrome/browser/ui/webui/options/browser_options_handler.h
diff --git a/chrome/browser/ui/webui/options/browser_options_handler.h b/chrome/browser/ui/webui/options/browser_options_handler.h
index 6bfd46a5ac979aa5aae1eea930a01bc2b9dbbe66..91eb87243ea9425bfade3e7f66f26acdf7ed4abe 100644
--- a/chrome/browser/ui/webui/options/browser_options_handler.h
+++ b/chrome/browser/ui/webui/options/browser_options_handler.h
@@ -285,6 +285,12 @@ class BrowserOptionsHandler
   // the hotword section of the settings page.
   void SendHotwordAvailable();
 
+  // Callback that shows the audio history upon completion of a call to the
+  // server to the get the current value.
+  void ShowHotwordAudioHistorySection(bool always_on,
+                                      bool success,
+                                      bool logging_enabled);
+
   // Callback for "requestHotwordAvailable" message.
   void HandleRequestHotwordAvailable(const base::ListValue* args);