Add enable-offlining-recent-pages feature switch.

components/offline_pages/offline_page_model_unittest.cc

 // Copyright 2015 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/offline_pages/offline_page_model.h"
 
 #include <stdint.h>
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
+#include "base/command_line.h"
+#include "base/feature_list.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/test_mock_time_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "components/bookmarks/browser/bookmark_client.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/bookmarks/browser/bookmark_node.h"
 #include "components/bookmarks/browser/bookmark_storage.h"
 #include "components/bookmarks/browser/bookmark_undo_delegate.h"
 #include "components/bookmarks/browser/bookmark_undo_provider.h"
 #include "components/bookmarks/test/test_bookmark_client.h"
+#include "components/offline_pages/offline_page_feature.h"
 #include "components/offline_pages/offline_page_item.h"
+#include "components/offline_pages/offline_page_switches.h"
 #include "components/offline_pages/offline_page_test_archiver.h"
 #include "components/offline_pages/offline_page_test_store.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 using SavePageResult = offline_pages::OfflinePageModel::SavePageResult;
 using DeletePageResult = offline_pages::OfflinePageModel::DeletePageResult;
 
 namespace offline_pages {
 
@@ skipping 943 matching lines @@
 
   std::set<int64_t> id_set;
   for (size_t i = 0; i < ids.size(); i++) {
     id_set.insert(ids[i]);
   }
 
   EXPECT_TRUE(id_set.find(offline1) != id_set.end());
   EXPECT_TRUE(id_set.find(offline2) != id_set.end());
 }
 
+TEST(CommandLineFlagsTest, OffliningRecentPages) {
+  // TODO(dimich): once offline pages are enabled by default, remove this.
+  base::CommandLine::ForCurrentProcess()->AppendSwitch(
+      switches::kEnableOfflinePages);
+  // Disabled by default.
+  EXPECT_FALSE(offline_pages::IsOffliningRecentPagesEnabled());
+
+  // Check if feature is correctly enabled by command-line flag.
+  base::FeatureList::ClearInstanceForTesting();
+  scoped_ptr<base::FeatureList> feature_list(new base::FeatureList);
+  feature_list->InitializeFromCommandLine(
+      offline_pages::kOffliningRecentPagesFeature.name, "");
+  base::FeatureList::SetInstance(std::move(feature_list));
+  EXPECT_TRUE(offline_pages::IsOffliningRecentPagesEnabled());
+}
+
 }  // namespace offline_pages