Migrate base::TaskRunner from Closure to OnceClosure

components/subresource_filter/content/browser/content_ruleset_service_unittest.cc

Index: components/subresource_filter/content/browser/content_ruleset_service_unittest.cc
diff --git a/components/subresource_filter/content/browser/content_ruleset_service_unittest.cc b/components/subresource_filter/content/browser/content_ruleset_service_unittest.cc
index b7914875dce61a1bfb829f4509d82772ae0f1dd4..e99b4beeb2b97202c3c63c8a5b913d7850dc1286 100644
--- a/components/subresource_filter/content/browser/content_ruleset_service_unittest.cc
+++ b/components/subresource_filter/content/browser/content_ruleset_service_unittest.cc
@@ -48,7 +48,7 @@ class TestContentBrowserClient : public ::content::ContentBrowserClient {
   // ::content::ContentBrowserClient:
   void PostAfterStartupTask(const tracked_objects::Location&,
                             const scoped_refptr<base::TaskRunner>& task_runner,
-                            base::Closure task) override {
+                            base::OnceClosure task) override {
     scoped_refptr<base::TaskRunner> ui_task_runner =
         content::BrowserThread::GetTaskRunnerForThread(
             content::BrowserThread::UI);
@@ -62,7 +62,7 @@ class TestContentBrowserClient : public ::content::ContentBrowserClient {
   }
 
  private:
-  base::Closure last_task_;
+  base::OnceClosure last_task_;
 
   DISALLOW_COPY_AND_ASSIGN(TestContentBrowserClient);
 };