Adding a previews IO-thread blacklist

components/previews/previews_io_data_unittest.cc

Index: components/previews/previews_io_data_unittest.cc
diff --git a/components/previews/previews_io_data_unittest.cc b/components/previews/previews_io_data_unittest.cc
index 4d99c92cf5cf6663184aba8fe442713af44e50de..8b36868d4dd7066adb512a198039e02f24fd3764 100644
--- a/components/previews/previews_io_data_unittest.cc
+++ b/components/previews/previews_io_data_unittest.cc
@@ -23,23 +23,24 @@ class TestPreviewsIOData : public PreviewsIOData {
       const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner,
       const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner)
       : PreviewsIOData(io_task_runner, ui_task_runner), initialized_(false) {}
   ~TestPreviewsIOData() override {}
 
   // Whether Initialize was called.
   bool initialized() { return initialized_; }
 
  private:
   // Set |initialized_| to true and use base class functionality.
-  void InitializeOnIOThread() override {
+  void InitializeOnIOThread(
+      std::unique_ptr<PreviewsOptOutStore> previews_opt_out_store) override {
     initialized_ = true;
-    PreviewsIOData::InitializeOnIOThread();
+    PreviewsIOData::InitializeOnIOThread(std::move(previews_opt_out_store));
   }
 
   // Whether Initialize was called.
   bool initialized_;
 };
 
 class PreviewsIODataTest : public testing::Test {
  public:
   PreviewsIODataTest() {}
 
@@ -62,19 +63,19 @@ class PreviewsIODataTest : public testing::Test {
  private:
   std::unique_ptr<TestPreviewsIOData> io_data_;
   std::unique_ptr<PreviewsUIService> ui_service_;
 };
 
 }  // namespace
 
 TEST_F(PreviewsIODataTest, TestInitialization) {
   set_io_data(base::WrapUnique(
       new TestPreviewsIOData(loop_.task_runner(), loop_.task_runner())));
-  set_ui_service(
-      base::WrapUnique(new PreviewsUIService(io_data(), loop_.task_runner())));
+  set_ui_service(base::WrapUnique(
+      new PreviewsUIService(io_data(), loop_.task_runner(), nullptr)));
   loop_.RunUntilIdle();
   // After the outstanding posted tasks have run, |io_data_| should be fully
   // initialized.
   EXPECT_TRUE(io_data()->initialized());
 }
 
 }  // namespace previews