Preset variation parameters for NTPSnippets feature.

chrome/browser/about_flags.cc

 // Copyright (c) 2012 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 "chrome/browser/about_flags.h"
 
 #include <iterator>
 #include <map>
 #include <set>
 #include <utility>
@@ skipping 26 matching lines @@
 #include "components/browser_sync/common/browser_sync_switches.h"
 #include "components/cloud_devices/common/cloud_devices_switches.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_switches.h"
 #include "components/dom_distiller/core/dom_distiller_switches.h"
 #include "components/error_page/common/error_page_switches.h"
 #include "components/flags_ui/feature_entry_macros.h"
 #include "components/flags_ui/flags_storage.h"
 #include "components/flags_ui/flags_ui_switches.h"
 #include "components/nacl/common/nacl_switches.h"
 #include "components/network_session_configurator/switches.h"
+#include "components/ntp_snippets/ntp_snippets_constants.h"
 #include "components/ntp_tiles/switches.h"
 #include "components/offline_pages/offline_page_feature.h"
 #include "components/omnibox/browser/omnibox_switches.h"
 #include "components/password_manager/core/common/password_manager_features.h"
 #include "components/proximity_auth/switches.h"
 #include "components/search/search_switches.h"
 #include "components/security_state/switches.h"
 #include "components/signin/core/common/signin_switches.h"
 #include "components/sync_driver/sync_driver_switches.h"
 #include "components/tracing/common/tracing_switches.h"
@@ skipping 448 matching lines @@
     {IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED, switches::kNtpSwitchToExistingTab,
      "disabled"},
     {IDS_FLAGS_NTP_SWITCH_TO_EXISTING_TAB_MATCH_URL,
      switches::kNtpSwitchToExistingTab, "url"},
     {IDS_FLAGS_NTP_SWITCH_TO_EXISTING_TAB_MATCH_HOST,
      switches::kNtpSwitchToExistingTab, "host"},
 };
 #endif  // defined(OS_ANDROID)
 
 #if defined(OS_ANDROID)
+const FeatureEntry::FeatureParam kNTPSnippetsFeatureVariationDefault[] = {};
+const FeatureEntry::FeatureParam kNTPSnippetsFeatureVariationOnlyPersonal[] = {
+    {"fetching_personalization", "personal"},
+    {"fetching_host_restrict", "off"},
+};
+const FeatureEntry::FeatureParam
+    kNTPSnippetsFeatureVariationOnlyNonPersonalHostRestricted[] = {
+        {"fetching_personalization", "non_personal"},
+        {"fetching_host_restrict", "on"},
+};
+const FeatureEntry::FeatureParam
+    kNTPSnippetsFeatureVariationOnlyPersonalHostRestricted[] = {
+        {"fetching_personalization", "personal"},
+        {"fetching_host_restrict", "on"},
+};
+
+// TODO(jkrcal) allow for nullptr instead of the empty array.
+const FeatureEntry::FeatureVariation kNTPSnippetsFeatureVariations[] = {
+    {"", kNTPSnippetsFeatureVariationDefault,
+     0},
+    {"only personalized", kNTPSnippetsFeatureVariationOnlyPersonal,
+     arraysize(kNTPSnippetsFeatureVariationOnlyPersonal)},
+    {"only from most visited sites",
+     kNTPSnippetsFeatureVariationOnlyNonPersonalHostRestricted,
+     arraysize(kNTPSnippetsFeatureVariationOnlyPersonal)},
+    {"only personalized from most visited sites",
+     kNTPSnippetsFeatureVariationOnlyPersonalHostRestricted,
+     arraysize(kNTPSnippetsFeatureVariationOnlyPersonalHostRestricted)},
+};
+#endif  // defined(OS_ANDROID)
+
+#if defined(OS_ANDROID)
 const FeatureEntry::Choice kUpdateMenuItemSummaryChoices[] = {
     {IDS_FLAGS_UPDATE_MENU_ITEM_NO_SUMMARY, "", ""},
     {IDS_FLAGS_UPDATE_MENU_ITEM_DEFAULT_SUMMARY,
         switches::kForceShowUpdateMenuItemSummary, ""},
     {IDS_FLAGS_UPDATE_MENU_ITEM_NEW_FEATURES_SUMMARY,
         switches::kForceShowUpdateMenuItemNewFeaturesSummary, ""},
     {IDS_FLAGS_UPDATE_MENU_ITEM_CUSTOM_SUMMARY,
         switches::kForceShowUpdateMenuItemCustomSummary, "Custom summary"},
 };
 #endif  // defined(OS_ANDROID)
@@ skipping 1279 matching lines @@
          extensions::switches::kDisableTabForDesktopShare)},
     {"disable-desktop-capture-picker-old-ui",
      IDS_FLAG_DISABLE_DESKTOP_CAPTURE_PICKER_OLD_UI,
      IDS_FLAG_DISABLE_DESKTOP_CAPTURE_PICKER_OLD_UI_DESCRIPTION, kOsAll,
      SINGLE_VALUE_TYPE(
          extensions::switches::kDisableDesktopCapturePickerOldUI)},
 #endif
 #if defined(OS_ANDROID)
     {"enable-ntp-snippets", IDS_FLAGS_ENABLE_NTP_SNIPPETS_NAME,
      IDS_FLAGS_ENABLE_NTP_SNIPPETS_DESCRIPTION, kOsAndroid,
-     FEATURE_VALUE_TYPE(chrome::android::kNTPSnippetsFeature)},
+     FEATURE_WITH_VARIATIONS_VALUE_TYPE(chrome::android::kNTPSnippetsFeature,
+                                        kNTPSnippetsFeatureVariations,
+                                        ntp_snippets::kStudyName)},
 #endif  // defined(OS_ANDROID)
 #if defined(ENABLE_WEBRTC) && BUILDFLAG(RTC_USE_H264)
     {"enable-webrtc-h264-with-openh264-ffmpeg",
      IDS_FLAGS_WEBRTC_H264_WITH_OPENH264_FFMPEG_NAME,
      IDS_FLAGS_WEBRTC_H264_WITH_OPENH264_FFMPEG_DESCRIPTION, kOsDesktop,
      FEATURE_VALUE_TYPE(content::kWebRtcH264WithOpenH264FFmpeg)},
 #endif  // defined(ENABLE_WEBRTC) && BUILDFLAG(RTC_USE_H264)
 #if defined(OS_ANDROID)
     {"ime-thread", IDS_FLAGS_IME_THREAD_NAME, IDS_FLAGS_IME_THREAD_DESCRIPTION,
      kOsAndroid, FEATURE_VALUE_TYPE(features::kImeThread)},
@@ skipping 300 matching lines @@
 const base::HistogramBase::Sample kBadSwitchFormatHistogramId = 0;
 
 const FeatureEntry* GetFeatureEntries(size_t* count) {
   *count = arraysize(kFeatureEntries);
   return kFeatureEntries;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags