Revert "Remove Finch support for PasswordBranding"

components/password_manager/core/browser/password_bubble_experiment.h

Index: components/password_manager/core/browser/password_bubble_experiment.h
diff --git a/components/password_manager/core/browser/password_bubble_experiment.h b/components/password_manager/core/browser/password_bubble_experiment.h
index 7d900a7b95ac1932a145fe0ad164190310f118ad..cfb1ac6d3a5ea337145ddee96175183e2c323c5e 100644
--- a/components/password_manager/core/browser/password_bubble_experiment.h
+++ b/components/password_manager/core/browser/password_bubble_experiment.h
@@ -14,10 +14,13 @@ class SyncService;
 
 namespace password_bubble_experiment {
 
+extern const char kBrandingExperimentName[];
 extern const char kChromeSignInPasswordPromoExperimentName[];
 extern const char kChromeSignInPasswordPromoThresholdParam[];
 extern const char kSmartBubbleExperimentName[];
 extern const char kSmartBubbleThresholdParam[];
+extern const char kSmartLockBrandingGroupName[];
+extern const char kSmartLockBrandingSavePromptOnlyGroupName[];
 
 // Registers prefs which controls appearance of the first run experience for the
 // Smart Lock UI, namely was first run experience shown for save prompt or auto
@@ -31,6 +34,35 @@ int GetSmartBubbleDismissalThreshold();
 // A Smart Lock user is a sync user without a custom passphrase.
 bool IsSmartLockUser(const syncer::SyncService* sync_service);
 
+enum class SmartLockBranding { NONE, FULL, SAVE_PROMPT_ONLY };
+
+// If the user is not a Smart Lock user, returns NONE. For Smart Lock users:
+// * returns NONE if the password manager should not be referred to as Smart
+//   Lock anywhere;
+// * returns FULL, if it should be referred to as Smart Lock everywhere;
+// * returns SAVE_PROMPT_ONLY if it only should be referred to as Smart Lock in
+//   the save password bubble.
+SmartLockBranding GetSmartLockBrandingState(
+    const syncer::SyncService* sync_service);
+
+// Convenience function for checking whether the result of
+// GetSmartLockBrandingState is SmartLockBranding::FULL.
+bool IsSmartLockBrandingEnabled(const syncer::SyncService* sync_service);
+
+// Convenience function for checking whether the result of
+// GetSmartLockBrandingState is not equal to SmartLockBranding::NONE.
+bool IsSmartLockBrandingSavePromptEnabled(
+    const syncer::SyncService* sync_service);
+
+// Returns true if save prompt should contain first run experience.
+bool ShouldShowSavePromptFirstRunExperience(
+    const syncer::SyncService* sync_service,
+    PrefService* prefs);
+
+// Sets appropriate value to the preference which controls appearance of the
+// first run experience for the save prompt.
+void RecordSavePromptFirstRunExperienceWasShown(PrefService* prefs);
+
 // Returns true if first run experience for auto sign-in prompt should be shown.
 bool ShouldShowAutoSignInPromptFirstRunExperience(PrefService* prefs);