[Extensions][TaskScheduler] Update ActivityLog for scheduling migration

chrome/browser/extensions/activity_log/activity_log_policy.cc

Index: chrome/browser/extensions/activity_log/activity_log_policy.cc
diff --git a/chrome/browser/extensions/activity_log/activity_log_policy.cc b/chrome/browser/extensions/activity_log/activity_log_policy.cc
index 8f0f931e52b1465492469a5c637f1e90a02d58cf..6936d93b14d46291c9b77023b6fb02f9f86cf94f 100644
--- a/chrome/browser/extensions/activity_log/activity_log_policy.cc
+++ b/chrome/browser/extensions/activity_log/activity_log_policy.cc
@@ -21,8 +21,6 @@
 #include "extensions/common/extension.h"
 #include "url/gurl.h"
 
-using content::BrowserThread;
-
 namespace constants = activity_log_constants;
 
 namespace extensions {
@@ -52,6 +50,7 @@ ActivityLogDatabasePolicy::ActivityLogDatabasePolicy(
 }
 
 void ActivityLogDatabasePolicy::Init() {
+  LOG(WARNING) << "Scheduling init";
   ScheduleAndForget(db_, &ActivityDatabase::Init, database_path_);
 }