[CodeHealth] Clean up SimplifiedUrlDisplayCleanup feature.

The feature is inactive and there are no plans to revive it
(confirmed with @meacer).

Bug: 356237004
Change-Id: I35435a2631bfdddcdc6dd412e7636f2392233f46
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6110484
Reviewed-by: Varun Khaneja <vakh@chromium.org>
Commit-Queue: Maria Kazinova <kazinova@google.com>
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1401883}

chrome/browser/safe_browsing/chrome_password_protection_service.cc

@@ -426,8 +426,6 @@ bool ChromePasswordProtectionService::ShouldShowPasswordReusePageInfoBubble(
 safe_browsing::LoginReputationClientRequest::UrlDisplayExperiment
 ChromePasswordProtectionService::GetUrlDisplayExperiment() const {
   safe_browsing::LoginReputationClientRequest::UrlDisplayExperiment experiment;
-  experiment.set_simplified_url_display_enabled(
-      base::FeatureList::IsEnabled(safe_browsing::kSimplifiedUrlDisplay));
   // Delayed warnings parameters:
   experiment.set_delayed_warnings_enabled(
       base::FeatureList::IsEnabled(safe_browsing::kDelayedWarnings));

components/safe_browsing/core/common/features.cc

@@ -309,10 +309,6 @@ constexpr base::FeatureParam<int>
         "ShowWarningsForSuspiciousNotificationsScoreThreshold",
         /*default_value=*/100};
 
-BASE_FEATURE(kSimplifiedUrlDisplay,
-             "SimplifiedUrlDisplay",
-             base::FEATURE_DISABLED_BY_DEFAULT);
-
 BASE_FEATURE(kSuspiciousSiteTriggerQuotaFeature,
              "SafeBrowsingSuspiciousSiteTriggerQuota",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -361,7 +357,6 @@ base::Value::List GetFeatureStatusList() {
       &kSafeBrowsingRemoveCookiesInAuthRequests,
       &kSafetyHubAbusiveNotificationRevocation,
       &kShowWarningsForSuspiciousNotifications,
-      &kSimplifiedUrlDisplay,
       &kSuspiciousSiteTriggerQuotaFeature,
       &kTailoredSecurityIntegration,
       &kVisualFeaturesSizes,

components/safe_browsing/core/common/features.h

@@ -285,12 +285,6 @@ BASE_DECLARE_FEATURE(kShowWarningsForSuspiciousNotifications);
 extern const base::FeatureParam<int>
     kShowWarningsForSuspiciousNotificationsScoreThreshold;
 
-// Status of the SimplifiedUrlDisplay experiments. This does not control the
-// individual experiments, those are controlled by their own feature flags.
-// The feature is only set by Finch so that we can differentiate between
-// default and control groups of the experiment.
-BASE_DECLARE_FEATURE(kSimplifiedUrlDisplay);
-
 // Controls the daily quota for the suspicious site trigger.
 BASE_DECLARE_FEATURE(kSuspiciousSiteTriggerQuotaFeature);
 

components/safe_browsing/core/common/proto/csd.proto

@@ -586,8 +586,9 @@ message LoginReputationClientRequest {
     optional bool hide_on_interaction = 4;
     // True if OmniboxUIExperimentElideToRegistrableDomain is enabled.
     optional bool elide_to_registrable_domain = 5;
-    // True if this is the control group. This sent by the finch config.
+
-    optional bool simplified_url_display_enabled = 6;
+    // Deprecated: simplified_url_display_enabled.
+    reserved 6;
   };
   optional UrlDisplayExperiment url_display_experiment = 14;
 

ios/chrome/browser/safe_browsing/model/chrome_password_protection_service.mm

@@ -361,8 +361,6 @@ ChromePasswordProtectionService::GetPasswordProtectionWarningTriggerPref(
 LoginReputationClientRequest::UrlDisplayExperiment
 ChromePasswordProtectionService::GetUrlDisplayExperiment() const {
   safe_browsing::LoginReputationClientRequest::UrlDisplayExperiment experiment;
-  experiment.set_simplified_url_display_enabled(
-      base::FeatureList::IsEnabled(safe_browsing::kSimplifiedUrlDisplay));
   // Delayed warnings parameters:
   experiment.set_delayed_warnings_enabled(
       base::FeatureList::IsEnabled(safe_browsing::kDelayedWarnings));