Add generic functions for getting typed variation parameter values

components/ntp_snippets/offline_pages/recent_tab_suggestions_provider.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/ntp_snippets/offline_pages/recent_tab_suggestions_provider.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "components/ntp_snippets/features.h"
 #include "components/ntp_snippets/pref_names.h"
 #include "components/ntp_snippets/pref_util.h"
 #include "components/offline_pages/core/client_policy_controller.h"
 #include "components/offline_pages/core/offline_page_item.h"
 #include "components/offline_pages/core/offline_page_model_query.h"
 #include "components/prefs/pref_registry_simple.h"
 #include "components/prefs/pref_service.h"
+#include "components/variations/variations_associated_data.h"
 #include "grit/components_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/image/image.h"
 
 using offline_pages::ClientId;
 using offline_pages::OfflinePageItem;
 using offline_pages::OfflinePageModelQuery;
 using offline_pages::OfflinePageModelQueryBuilder;
 
 namespace ntp_snippets {
 
 namespace {
 
 const int kDefaultMaxSuggestionsCount = 5;
 
 const char* kMaxSuggestionsCountParamName = "recent_tabs_max_count";
 
 int GetMaxSuggestionsCount() {
-  return GetParamAsInt(kRecentOfflineTabSuggestionsFeature,
-                       kMaxSuggestionsCountParamName,
-                       kDefaultMaxSuggestionsCount);
+  return variations::GetVariationParamByFeatureAsInt(
+      kRecentOfflineTabSuggestionsFeature, kMaxSuggestionsCountParamName,
+      kDefaultMaxSuggestionsCount);
 }
 
 struct OrderOfflinePagesByMostRecentlyCreatedFirst {
   bool operator()(const OfflinePageItem* left,
                   const OfflinePageItem* right) const {
     return left->creation_time > right->creation_time;
   }
 };
 
 struct OrderOfflinePagesByUrlAndThenMostRecentlyCreatedFirst {
@@ skipping 283 matching lines @@
 }
 
 void RecentTabSuggestionsProvider::StoreDismissedIDsToPrefs(
     const std::set<std::string>& dismissed_ids) {
   prefs::StoreDismissedIDsToPrefs(pref_service_,
                                   prefs::kDismissedRecentOfflineTabSuggestions,
                                   dismissed_ids);
 }
 
 }  // namespace ntp_snippets