Add base::FeatureParam<> struct

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index de1ba294a5670102acd6f0c9aff947e75a17ac14..6407ae1823a70ab217a1cee628a6428adc50f1dd 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -665,13 +665,13 @@ const FeatureEntry::Choice kAshUiModeChoices[] = {
 #if defined(OS_ANDROID)
 const FeatureEntry::FeatureParam
     kContentSuggestionsCategoryOrderFeatureVariationGeneral[] = {
-        {ntp_snippets::kCategoryOrderParameter,
+        {ntp_snippets::kCategoryOrderParameter.name,
          ntp_snippets::kCategoryOrderGeneral},
 };
 
 const FeatureEntry::FeatureParam
     kContentSuggestionsCategoryOrderFeatureVariationEMOriented[] = {
-        {ntp_snippets::kCategoryOrderParameter,
+        {ntp_snippets::kCategoryOrderParameter.name,
          ntp_snippets::kCategoryOrderEmergingMarketsOriented},
 };
 
@@ -687,13 +687,13 @@ const FeatureEntry::FeatureVariation
 
 const FeatureEntry::FeatureParam
     kContentSuggestionsCategoryRankerFeatureVariationConstant[] = {
-        {ntp_snippets::kCategoryRankerParameter,
+        {ntp_snippets::kCategoryRankerParameter.name,
          ntp_snippets::kCategoryRankerConstantRanker},
 };
 
 const FeatureEntry::FeatureParam
     kContentSuggestionsCategoryRankerFeatureVariationClickBased[] = {
-        {ntp_snippets::kCategoryRankerParameter,
+        {ntp_snippets::kCategoryRankerParameter.name,
          ntp_snippets::kCategoryRankerClickBasedRanker},
 };