Reland of Moving previews code from components/ to chrome/

components/previews/core/previews_opt_out_store_sql.h

Index: components/previews/core/previews_opt_out_store_sql.h
diff --git a/components/previews/core/previews_opt_out_store_sql.h b/components/previews/core/previews_opt_out_store_sql.h
index 801b85074471063f309ce6d88dc9254a862af51b..0d3b6389e0f098b58910248d4ad510054910aab3 100644
--- a/components/previews/core/previews_opt_out_store_sql.h
+++ b/components/previews/core/previews_opt_out_store_sql.h
@@ -36,7 +36,8 @@ class PreviewsOptOutStoreSQL : public PreviewsOptOutStore {
   PreviewsOptOutStoreSQL(
       scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
       scoped_refptr<base::SequencedTaskRunner> background_task_runner,
-      const base::FilePath& database_dir);
+      const base::FilePath& database_dir,
+      std::unique_ptr<PreviewsTypeList> enabled_previews);
   ~PreviewsOptOutStoreSQL() override;
 
   // PreviewsOptOutStore implementation:
@@ -60,6 +61,9 @@ class PreviewsOptOutStoreSQL : public PreviewsOptOutStore {
   // SQL connection to the SQLite database.
   std::unique_ptr<sql::Connection> db_;
 
+  // All enabled previews and versions.
+  const std::unique_ptr<PreviewsTypeList> enabled_previews_;
+
   DISALLOW_COPY_AND_ASSIGN(PreviewsOptOutStoreSQL);
 };