[NTP::SectionOrder] Add EM oriented order.
Add new EM default order (articles, downloads, bookmarks) and allow
choosing the default order via variations.
BUG=690330
Review-Url: https://codereview.chromium.org/2696563002
Cr-Commit-Position: refs/heads/master@{#450365}
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 855e4aeb..d8c595b 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -499,6 +499,28 @@
#if defined(OS_ANDROID)
const FeatureEntry::FeatureParam
+ kContentSuggestionsCategoryOrderFeatureVariationGeneral[] = {
+ {ntp_snippets::kCategoryOrderParameter,
+ ntp_snippets::kCategoryOrderGeneral},
+};
+
+const FeatureEntry::FeatureParam
+ kContentSuggestionsCategoryOrderFeatureVariationEMOriented[] = {
+ {ntp_snippets::kCategoryOrderParameter,
+ ntp_snippets::kCategoryOrderEmergingMarketsOriented},
+};
+
+const FeatureEntry::FeatureVariation
+ kContentSuggestionsCategoryOrderFeatureVariations[] = {
+ {"(general)", kContentSuggestionsCategoryOrderFeatureVariationGeneral,
+ arraysize(kContentSuggestionsCategoryOrderFeatureVariationGeneral),
+ nullptr},
+ {"(emerging markets oriented)",
+ kContentSuggestionsCategoryOrderFeatureVariationEMOriented,
+ arraysize(kContentSuggestionsCategoryOrderFeatureVariationEMOriented),
+ nullptr}};
+
+const FeatureEntry::FeatureParam
kContentSuggestionsCategoryRankerFeatureVariationConstant[] = {
{ntp_snippets::kCategoryRankerParameter,
ntp_snippets::kCategoryRankerConstantRanker},
@@ -1832,6 +1854,16 @@
SINGLE_VALUE_TYPE(extensions::switches::kDisableTabForDesktopShare)},
#endif // ENABLE_EXTENSIONS
#if defined(OS_ANDROID)
+ // TODO(vitaliii): Use ntp_snippets::kStudyName as the feature trial.
+ // Currently, only a single FEATURE_WITH_VARIATIONS_VALUE_TYPE can use a
+ // given study name. See crbug.com/690450.
+ {"content-suggestions-category-order",
+ IDS_FLAGS_CONTENT_SUGGESTIONS_CATEGORY_ORDER_NAME,
+ IDS_FLAGS_CONTENT_SUGGESTIONS_CATEGORY_ORDER_DESCRIPTION, kOsAndroid,
+ FEATURE_WITH_VARIATIONS_VALUE_TYPE(
+ ntp_snippets::kCategoryOrder,
+ kContentSuggestionsCategoryOrderFeatureVariations,
+ "content-suggestions-category-order-feature-trial")},
{"content-suggestions-category-ranker",
IDS_FLAGS_CONTENT_SUGGESTIONS_CATEGORY_RANKER_NAME,
IDS_FLAGS_CONTENT_SUGGESTIONS_CATEGORY_RANKER_DESCRIPTION, kOsAndroid,
