[merchant trust] Add survey config for evaluation surveys

Add features and survey configs for evaluation surveys. They will be attempted to be shown on NTP open if the conditions apply: since feature interaction between [min, max] minutes has passed (will be added in a separate CL).

Bug: 378854311
Change-Id: Ib552295434c42b65f44016d110044e4b310545c4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6185361
Reviewed-by: Martin Šrámek <[email protected]>
Reviewed-by: Nicola Tommasi <[email protected]>
Code-Coverage: [email protected] <[email protected]>
Reviewed-by: Elly FJ <[email protected]>
Commit-Queue: Olesia Marukhno <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1409967}
diff --git a/components/page_info/core/features.cc b/components/page_info/core/features.cc
index e84c198f..856842d 100644
--- a/components/page_info/core/features.cc
+++ b/components/page_info/core/features.cc
@@ -83,4 +83,12 @@
          base::ToLowerASCII(locale) == kMerchantTrustEnabledForLocale;
 }
 
+BASE_FEATURE(kMerchantTrustEvaluationControlSurvey,
+             "MerchantTrustEvaluationControlSurvey",
+             base::FEATURE_DISABLED_BY_DEFAULT);
+
+BASE_FEATURE(kMerchantTrustEvaluationExperimentSurvey,
+             "MerchantTrustEvaluationExperimentSurvey",
+             base::FEATURE_DISABLED_BY_DEFAULT);
+
 }  // namespace page_info