Adding a SQL implementation of the backing store for previews opt outs

components/previews/core/previews_io_data_unittest.cc

Index: components/previews/core/previews_io_data_unittest.cc
diff --git a/components/previews/core/previews_io_data_unittest.cc b/components/previews/core/previews_io_data_unittest.cc
index 7021a5a2663c543c0744a83993d022cf388ee64e..36d2bfc5572e62c5fc0393092feaeff1a6ae9881 100644
--- a/components/previews/core/previews_io_data_unittest.cc
+++ b/components/previews/core/previews_io_data_unittest.cc
@@ -24,24 +24,23 @@ 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(
-      std::unique_ptr<PreviewsOptOutStore> previews_opt_out_store) override {
+  void InitializeOnIOThread() override {
     initialized_ = true;
-    PreviewsIOData::InitializeOnIOThread(std::move(previews_opt_out_store));
+    PreviewsIOData::InitializeOnIOThread();
   }
 
   // Whether Initialize was called.
   bool initialized_;
 };
 
 class PreviewsIODataTest : public testing::Test {
  public:
   PreviewsIODataTest() {}