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

components/previews/core/previews_io_data.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/previews/core/previews_io_data.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/files/file_path.h"
 #include "base/location.h"
@@ skipping 14 matching lines @@
       weak_factory_(this) {}
 
 PreviewsIOData::~PreviewsIOData() {}
 
 void PreviewsIOData::Initialize(
     base::WeakPtr<PreviewsUIService> previews_ui_service,
     std::unique_ptr<PreviewsOptOutStore> previews_opt_out_store) {
   DCHECK(ui_task_runner_->BelongsToCurrentThread());
   previews_ui_service_ = previews_ui_service;
 
-  // Set up the IO thread portion of |this|.
-  io_task_runner_->PostTask(
-      FROM_HERE,
-      base::Bind(&PreviewsIOData::InitializeOnIOThread, base::Unretained(this),
-                 base::Passed(&previews_opt_out_store)));
-}
-
-void PreviewsIOData::InitializeOnIOThread(
-    std::unique_ptr<PreviewsOptOutStore> previews_opt_out_store) {
-  DCHECK(io_task_runner_->BelongsToCurrentThread());
   previews_black_list_.reset(
       new PreviewsBlackList(std::move(previews_opt_out_store),
                             base::MakeUnique<base::DefaultClock>()));
+
+  // Set up the IO thread portion of |this|.
+  io_task_runner_->PostTask(FROM_HERE,
+                            base::Bind(&PreviewsIOData::InitializeOnIOThread,
+                                       base::Unretained(this)));
+}
+
+void PreviewsIOData::InitializeOnIOThread() {
+  DCHECK(io_task_runner_->BelongsToCurrentThread());
+  previews_black_list_->Initialize();
+
   ui_task_runner_->PostTask(
       FROM_HERE, base::Bind(&PreviewsUIService::SetIOData, previews_ui_service_,
                             weak_factory_.GetWeakPtr()));
 }
 
 }  // namespace previews