| // 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_tiles/field_trial.h" |
| |
| #if defined(OS_ANDROID) |
| #include <jni.h> |
| #endif |
| #include <string> |
| |
| #include "base/command_line.h" |
| #include "base/metrics/field_trial.h" |
| #include "base/strings/string_util.h" |
| #include "components/ntp_tiles/constants.h" |
| #include "components/ntp_tiles/switches.h" |
| |
| #if defined(OS_ANDROID) |
| #include "base/android/jni_android.h" |
| #include "jni/MostVisitedSites_jni.h" |
| #endif |
| |
| namespace ntp_tiles { |
| |
| bool ShouldShowPopularSites() { |
| // Note: It's important to query the field trial state first, to ensure that |
| // UMA reports the correct group. |
| const std::string group_name = |
| base::FieldTrialList::FindFullName(kPopularSitesFieldTrialName); |
| |
| base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess(); |
| if (cmd_line->HasSwitch(switches::kDisableNTPPopularSites)) |
| return false; |
| |
| if (cmd_line->HasSwitch(switches::kEnableNTPPopularSites)) |
| return true; |
| |
| #if defined(OS_ANDROID) |
| if (Java_MostVisitedSites_isPopularSitesForceEnabled( |
| base::android::AttachCurrentThread())) { |
| return true; |
| } |
| #endif |
| |
| // Until any configuration is fetched, the default is to enable popular sites. |
| if (group_name.empty()) { |
| return true; |
| } |
| |
| return base::StartsWith(group_name, "Enabled", |
| base::CompareCase::INSENSITIVE_ASCII); |
| } |
| |
| } // namespace ntp_tiles |