Adding ClearBlackList to the PreviewsBlackList and plumbing to UI

components/previews/core/previews_ui_service.cc

Index: components/previews/core/previews_ui_service.cc
diff --git a/components/previews/core/previews_ui_service.cc b/components/previews/core/previews_ui_service.cc
index f357893ff5c78e4a1ddbadcc2fa3edf3852761bd..af146cc81f10fa7ebbaa270c3cddd14a7bd3c230 100644
--- a/components/previews/core/previews_ui_service.cc
+++ b/components/previews/core/previews_ui_service.cc
@@ -1,19 +1,20 @@
 // 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_ui_service.h"
 
 #include "base/bind.h"
 #include "base/single_thread_task_runner.h"
 #include "components/previews/core/previews_io_data.h"
+#include "url/gurl.h"
 
 namespace previews {
 
 PreviewsUIService::PreviewsUIService(
     PreviewsIOData* previews_io_data,
     const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner,
     std::unique_ptr<PreviewsOptOutStore> previews_opt_out_store)
     : io_task_runner_(io_task_runner), weak_factory_(this) {
   previews_io_data->Initialize(weak_factory_.GetWeakPtr(),
                                std::move(previews_opt_out_store));
@@ -21,11 +22,28 @@ PreviewsUIService::PreviewsUIService(
 
 PreviewsUIService::~PreviewsUIService() {
   DCHECK(thread_checker_.CalledOnValidThread());
 }
 
 void PreviewsUIService::SetIOData(base::WeakPtr<PreviewsIOData> io_data) {
   DCHECK(thread_checker_.CalledOnValidThread());
   io_data_ = io_data;
 }
 
+void PreviewsUIService::AddPreviewNavigation(const GURL& url,
+                                             PreviewsType type,
+                                             bool opt_out) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  io_task_runner_->PostTask(
+      FROM_HERE, base::Bind(&PreviewsIOData::AddPreviewNavigation, io_data_,
+                            url, opt_out, type));
+}
+
+void PreviewsUIService::ClearBlackList(base::Time begin_time,
+                                       base::Time end_time) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  io_task_runner_->PostTask(
+      FROM_HERE, base::Bind(&PreviewsIOData::ClearBlackList, io_data_,
+                            begin_time, end_time));
+}
+
 }  // namespace previews