Revert "Remove Finch support for PasswordBranding"

components/password_manager/core/browser/password_bubble_experiment.cc

Index: components/password_manager/core/browser/password_bubble_experiment.cc
diff --git a/components/password_manager/core/browser/password_bubble_experiment.cc b/components/password_manager/core/browser/password_bubble_experiment.cc
index ff0b3ef493a395c0c43caf6a8ce81908fa5f326b..a0e5c88d13b1629d454ce825c91ac5a130808141 100644
--- a/components/password_manager/core/browser/password_bubble_experiment.cc
+++ b/components/password_manager/core/browser/password_bubble_experiment.cc
@@ -18,13 +18,20 @@
 
 namespace password_bubble_experiment {
 
+const char kBrandingExperimentName[] = "PasswordBranding";
 const char kChromeSignInPasswordPromoExperimentName[] = "SignInPasswordPromo";
 const char kChromeSignInPasswordPromoThresholdParam[] = "dismissal_threshold";
 const char kSmartBubbleExperimentName[] = "PasswordSmartBubble";
 const char kSmartBubbleThresholdParam[] = "dismissal_count";
+const char kSmartLockBrandingGroupName[] = "SmartLockBranding";
+const char kSmartLockBrandingSavePromptOnlyGroupName[] =
+    "SmartLockBrandingSavePromptOnly";
 
 void RegisterPrefs(PrefRegistrySimple* registry) {
   registry->RegisterBooleanPref(
+      password_manager::prefs::kWasSavePrompFirstRunExperienceShown, false);
+
+  registry->RegisterBooleanPref(
       password_manager::prefs::kWasAutoSignInFirstRunExperienceShown, false,
       user_prefs::PrefRegistrySyncable::SYNCABLE_PRIORITY_PREF);
 
@@ -48,6 +55,40 @@ bool IsSmartLockUser(const syncer::SyncService* sync_service) {
          password_manager::SYNCING_NORMAL_ENCRYPTION;
 }
 
+SmartLockBranding GetSmartLockBrandingState(
+    const syncer::SyncService* sync_service) {
+  // Query the group first for correct UMA reporting.
+  std::string group_name =
+      base::FieldTrialList::FindFullName(kBrandingExperimentName);
+  if (!IsSmartLockUser(sync_service))
+    return SmartLockBranding::NONE;
+  if (group_name == kSmartLockBrandingGroupName)
+    return SmartLockBranding::FULL;
+  if (group_name == kSmartLockBrandingSavePromptOnlyGroupName)
+    return SmartLockBranding::SAVE_PROMPT_ONLY;
+  return SmartLockBranding::NONE;
+}
+
+bool IsSmartLockBrandingEnabled(const syncer::SyncService* sync_service) {
+  return GetSmartLockBrandingState(sync_service) == SmartLockBranding::FULL;
+}
+
+bool IsSmartLockBrandingSavePromptEnabled(
+    const syncer::SyncService* sync_service) {
+  return GetSmartLockBrandingState(sync_service) != SmartLockBranding::NONE;
+}
+
+bool ShouldShowSavePromptFirstRunExperience(
+    const syncer::SyncService* sync_service,
+    PrefService* prefs) {
+  return false;
+}
+
+void RecordSavePromptFirstRunExperienceWasShown(PrefService* prefs) {
+  prefs->SetBoolean(
+      password_manager::prefs::kWasSavePrompFirstRunExperienceShown, true);
+}
+
 bool ShouldShowAutoSignInPromptFirstRunExperience(PrefService* prefs) {
   return !prefs->GetBoolean(
       password_manager::prefs::kWasAutoSignInFirstRunExperienceShown);